Wednesday, June 29, 2011

7th Grade Ecology #3*



7th Grade Ecology #3

Biomes and Ecosystems 
By Trista L. Pollard



3.6.F. Ecology
1. Give reasons supporting the fact that the number of organisms an environment can support depends on the physical conditions and resources available.
a. Explain that populations increase or decrease relative to the availability of resources and the conditions of the environment.
b. Identify and describe factors that could limit populations within any environment, such as disease, introduction of a nonnative species, depletion of resources, etc.
c. Explain that within any environment organisms with similar needs may compete with one another for resources.
d. Cite examples to illustrate that competition is reduced when organisms use different sets of resources, such as birds in a forest eat different kinds and sizes of seeds.

Vocabulary Words to Look up and put in your Journal
Abiotic
Biotic
Ecology
Ecosystem
Habitat
Niche
PopulationSize        
Limiting Factor
Community     
Native Species
Exotic Species
Predation
Predator
Prey
Symbiosis
Commensalism
Mutualism
Parasitism
Competition
Adaptation  

PRE -TEST 
Assignment= Please copy into your journal and  complete this pretest  abouBiomes






Biomes and Ecosystems


1.
What are biomes?



2.
What are ecosystems?



3.
______ have trees with cones.
  Temperate forests
  Tropical dry forests
  Tropical rainforests
  Cold climate forests
4.
Plants in deserts have to survive large amounts of rain each year.
  False
  True
5.
Complete the sentence: Grasslands are areas ______.



6.
Describe tundras.



7.
Where are some tropical rainforests found on Earth?



8.
What are grasslands called in the United States?







PRE -TEST 
Assignment= Please copy into your journal and  complete this pretest  about food webs




Food Webs


1.Food gives us ______.
  Energy
  Oxygen
  Sunlight
  All of the above
2.Living things like green plants and algae that make their own food using energy from the sun are called ______.
  Prey
  Predators
  Producers
  Consumers
3.Food and energy move in a path called a ______.




4.The food of almost every living thing begins with ______.
  Water
  Vegetables
  Meat
  The sun
5.Algae that live in the ocean are very important because ______.
  As part of plankton, they are food for many different living things.
  They make oxygen for us to breathe.
  Algae are food for tiny little floating animals.
  All of the above
6.Animals that eat only plants are called ______.
  Omnivores
  Decomposers
  Herbivores
  Consumers








7.Animals that cannot make their own food are called _________.
  Consumers
  Decomposers
  Omnivores
  Herbivores
8.Animals that eat both plants and animals are called _________.
  Decomposers
  Herbivores
  Omnivores
  Consumers
9.Animals that eat meat are called ___________.
  Herbivores
  Carnivores
  Omnivores
  Decomposers
10._________ break down the remains of dead organisms and their wastes.
  Herbivores
  Consumers
  Omnivores
  Decomposers

BIG IDEAS
1.    Ecology is the study of how living things interact with each other and their environment.  Ecologist study how the biotic and abiotic factors interact within an ecosystem.
2.    An ecosystem is all the living things and nonliving things that interact in an area.
3.    The living parts of an ecosystem are called biotic factors.
4.    The non-living factors of an ecosystem are called abiotic factors.  Abiotic factors found in many environments include water, sunlight, oxygen, temperature, and soil.
5.    Habitat is place where an organism lives and that provides the things the organisms needs.
6.    Population referred to all the organisms of one species in a particular area.
7.    All the different populations that live together in an area make up a community.
8.    Several communities make up an ecosystem.
9.    Some limiting factors for populations are food, space, and weather conditions.
10. Other factors that could limit populations within any environment include: disease, introduction of a nonnative species, depletion of resources, etc.
11. The major types of interactions among organisms are competition, predation, and symbiosis.
12. Organisms compete for space, food, and water.
13. Competition is reduced when organisms use different sets of resources.
14. The number of organisms an environment can support depends on the physical conditions and resources available.
15. If the birth rate of a population is greater than the death rate the population’s size increases.  If death rate is greater than birth rate the population’s size decreases.
16. Populations increase or decrease relative to the availability of resources and the conditions of the environment.
17. If predators are effective the prey population decreases, but a decrease in prey population in turn affects the predator population.
18. Within any environment organisms with similar needs may compete with one another for resources.
19. An organism’s particular role or how it makes its living is called its niche.
20. When one organism consumes another it is called predation.  Predators kill, prey is eaten.
21. Predators and prey often have adaptations to help them kill or help them not be eaten (hide, run away, etc.)
22. Symbiosis is a close relationship between two species that benefits at least one species.  There are three types of symbiotic relationships: mutualism (both species benefit), commensalism (one species benefits and other is not harmed), and parasitism (one species benefits and other is harmed).



Vocabulary
Assignment= Please copy into your journal and  complete this activity bCompleting each sentence using the words in the word list.

Competition
Symbiosis
Ecosystem
Predator
Prey
Adaptation
Mutualism
Community
Habitat


_______________
1.  
The unique jaw shape of each species is an ____ toits unique diet.
_______________
2.  
All the populations in a pond form a ____.
_______________
3.  
An oak tree and the organisms tht inhabit it can be thought of as a small ____.
_______________
4.  
A ____, an animal that hunts another animal for food, can be found in the jungle.
_______________
5.  
Birds of ____ use their talons to catch their dinner.
_______________
6.  
The honeybee and the daisy live in ____.
_______________
7.  
The tiger will take his ____ by surprise and pounce on it.
_______________
8.  
A predator hunts its ____.
_______________
9.  
My cousin, Jordan, won a medal at the track ____.
_______________
10.
The ____ of a whale is the sea.
_______________
11.
Raccoons, deer, and trees are part of a forest ____.
_______________
12.
The eagle flew to its aerie in order to protect its young from the advancing ____.
_______________
13.
The frog looked at its ____ through its yellow peepers.





Biomes and Ecosystems 
By Trista L. Pollard



1     Did you know that there are communities right in your backyard? Do you know that some communities don't have houses, but trees, plants, and shrubs? Well, these communities are part of ecosystems . They are also part of biomes .
 2     Biomes are large areas that have similar plants, animals, and other organisms . Organisms are living things that can work independently. Some of these organisms we cannot see with our eyes. However, they are there. Ecosystems are smaller than biomes. They are a community of plants and animals that live in an environment.



Assignment= Please copy into your journal and  complete this graphic organizer from the reading above


 3     There are many biomes on Earth. However, we will only talk about four. They are forests, grasslandsdeserts, and tundras. The animals and plants in these biomes need to adapt to the environment. Each biome has different types of water, soil, and climate.
 4     Forests are trees and other plants that cover a large area. These trees and plants grow in groups that are very dense. Depending on the climate, different types of trees and plants grow in the forest. There are tropical rainforeststropical dry forestscold climate forests, and temperate forests. Temperate forests are found in the eastern United States. These forests have cold winters and warm summers. You can tell you are in a temperate forest if the leaves change colors in the fall. Cold climate forests have trees that have cones. You would find pine, fir, and spruce trees in these areas. These forests are found in the mountains.

Assignment= Please copy into your journal and  complete this graphic organizer from the reading above


 5     Tropical forests are found in different areas of the world. Tropical dry forests are found in parts of Australia and Central America. They have high temperatures. They also have very little rainfall. Tropical rainforests are the opposite. They have a lot of rain. Some of these forests are found in Africa, South America, and Asia.
 




Assignment= Please copy into your journal and  complete this graphic organizer from the reading above



6     Grasslands are areas that are covered with grass and very few trees. You know them as prairies in the United States. There are very hot summers and very cold winters in grassland areas. Grasslands have some rain. However, the rain is not enough for trees to grow there.



Assignment= Please copy into your journal and  complete this graphic organizer from the reading above 7     



Deserts are the driest places on Earth. They have very little rain during the year. The plants that are in the desert have to survive the low amount of rain. You may see cacti in deserts. The U.S. has a desert in California. It is called the Mojave Desert (Mo-ha-vee). The Sahara Desert in Africa is the largest desert on Earth.

8


Assignment= Please copy into your journal and  complete this graphic organizer from the reading above

     The last biome is tundra. A tundra is a frozen prairie. If you were to visit Antarctica or Alaska, you would be visiting a tundra. Tundras have summers that are not very hot. The winters are extremely cold. There are plants that grow in the tundra. However, there are not any trees.


Assignment= Please copy into your journal and  complete this graphic organizer from the reading above


 9     Animals that live in these different biomes need to adapt to the climate. Their feeding habits may depend on the climate. They may have layers of fur that help to keep them warm. They may also have very thin fur or covering for hot weather.



 10     Ecosystems can be very small or very large. They can be as large as the Amazon Rainforest. They can also be the small log in your backyard. The ants in your backyard are part of an ecosystem. They depend on the water from the rain. They use the soil to make their homes. If we drop food in the backyard, it becomes their food. They live together with the other insects and animals.
 11     So take a trip into your backyard or to the park in your neighborhood. There is an ecosystem waiting for you to explore.


Copyright © 2011 edHelper

Assignment=Please copy this activity in your journal and complete each sentence using the words in the word list.



Rewrite each sentence in the correct order and using the correct punctuation.

1.
biome also ecosystem is A an .

2.
in community the All a form populations a pond .

3.
is whale habitat a of sea The the .

4.
data ecology my In biomass class we studies from statistical gathered . ,

5.
brown functioning web web food green the keep is ecosystem connected to to The food the .

6.
ecosystem plant swamp in a A the is biotic .

7.
as it can ecosystem and tht the An organisms be inhabit thought tree a oak of small .

8.
The uses its to Mexican beaded lizard subdue poison prey .






Biomes and Ecosystems CLOZE Activity

Assignment= Please copy into your journal and  complete this activity there




biome
community
visiting
adapt


extremely
grassland
visit
different


neighborhood
temperate
communities
dense


tundra
ecosystem
biomes
tundras


grasslands
rainfall
ecosystems
during


Directions:  Fill in each blank with the word that best completes the reading comprehension.

     Did you know that there are communities right in your backyard? Do you know that some(1)  _______________________   don't have houses, but trees, plants, and shrubs? Well, these communities are part ofecosystems . They are also part of biomes .
     Biomes are large areas that have similar plants, animals, and other organisms . Organisms are living things that can work independently. Some of these organisms we cannot see with our eyes. However, they are there. Ecosystems are smaller than biomes. They are a (2)  _______________________   of plants and animals that live in an environment.
     There are many (3)  _______________________   on Earth. However, we will only talk about four. They are forests,(4)  _______________________  deserts, and tundras. The animals and plants in these biomes need to (5)  _______________________   to the environment. Each biome has different types of water, soil, and climate.
     Forests are trees and other plants that cover a large area. These trees and plants grow in groups that are very(6)  _______________________  . Depending on the climate, different types of trees and plants grow in the forest. There are tropical rainforeststropical dry forestscold climate forests, and temperate forests. Temperate forests are found in the eastern United States. These forests have cold winters and warm summers. You can tell you are in a (7)  _______________________   forest if the leaves change colors in the fall. Cold climate forests have trees that have cones. You would find pine, fir, and spruce trees in these areas. These forests are found in the mountains.
     Tropical forests are found in different areas of the world. Tropical dry forests are found in parts of Australia and Central America. They have high temperatures. They also have very little (8)  _______________________  . Tropical rainforests are the opposite. They have a lot of rain. Some of these forests are found in Africa, South America, and Asia.
     Grasslands are areas that are covered with grass and very few trees. You know them as prairies in the United States. There are very hot summers and very cold winters in (9)  _______________________   areas. Grasslands have some rain. However, the rain is not enough for trees to grow there.
     Deserts are the driest places on Earth. They have very little rain (10)  _______________________   the year. The plants that are in the desert have to survive the low amount of rain. You may see cacti in deserts. The U.S. has a desert in California. It is called the Mojave Desert (Mo-ha-vee). The Sahara Desert in Africa is the largest desert on Earth.
     The last (11)  _______________________   is tundra. A tundra is a frozen prairie. If you were to (12)  _______________________   Antarctica or Alaska, you would be (13)  _______________________   a (14)  _______________________  .(15)  _______________________   have summers that are not very hot. The winters are (16)  _______________________   cold. There are plants that grow in the tundra. However, there are not any trees.
     Animals that live in these (17)  _______________________   biomes need to adapt to the climate. Their feeding habits may depend on the climate. They may have layers of fur that help to keep them warm. They may also have very thin fur or covering for hot weather.
     (18)  _______________________   can be very small or very large. They can be as large as the Amazon Rainforest. They can also be the small log in your backyard. The ants in your backyard are part of an ecosystem. They depend on the water from the rain. They use the soil to make their homes. If we drop food in the backyard, it becomes their food. They live together with the other insects and animals.
     So take a trip into your backyard or to the park in your (19)  _______________________  . There is an(20)  _______________________   waiting for you to explore.

Copyright © 2011 edHelper





Vocabulary







Assignment=Please copy this activity in your journal and complete each sentence using the words in the word list.

Commensalism
Parasitism
Symbiosis
Predator
Prey
Competition
Adaptation
Ecosystem
Niche


_______________
30.
Mosses can have a ____ relationship with trees.
_______________
31.
Is the wolf considered a ____.
_______________
32.
A special way that animals live together is called a ____.
_______________
33.
The frog looked at its ____ through its yellow peepers.
_______________
34.
Orchids are another plant that can have a ____ relationship with a tree.
_______________
35.
One ____ sea turtles have is to hide their eggs in the sand.
_______________
36.
The class has several forms of life represented in it. It's a type of ____.
_______________
37.
The snails gravitate toward the moist, dark area of the ____.
_______________
38.
An oak tree and the organisms tht inhabit it can be thought of as a small ____.
_______________
39.
Bees have an important ____ in pollinating flowers as they gather nectar to make honey.
_______________
40.
The ____ ate his prey.
_______________
41.
A tapeworm living inside a human descrbes a ____ relationship.
_______________
42.
In ____, the parasite usually lives on or in a much larger organism and feeds on it while it is still alive.
_______________
43.
My cousin, Jordan, won a medal at the track ____.





Assignment= Please copy into your journal and  complete this activity there





Vocabulary
Complete each sentence using the words in the word list.

Competition
Ecosystem
Habitat
Prey

Adaptation
Predator
Biotic



_______________
44.
The ____ of the aquarium consists of the eggs, fish , and gravel.
_______________
45.
____ parts of an ecosystem include the plants and animals in that area.
_______________
46.
Phytoplankton are the main source of the ocean's food chain and energy source for the marine ____.
_______________
47.
An envirionment needs both ____ and abiotic factors.
_______________
48.
A forest is a land ____.
_______________
49.
The thick fur of some animals is an ____ to cold environments.
_______________
50.
The professional pool player used his own cue in the ____.
_______________
51.
The fox is a ____ of mice and voles.
_______________
52.
My cousin, Matthew, won a medal at the track ____.
_______________
53.
Animals on the Galapagos are known for their ____ to their habitat.
_______________
54.
A bear's ____ is the woods.
_______________
55.
The African Savanna is the lion's ____.
_______________
56.
Hibernation is a behavioral ____ that helps some animals survive the winter, when food supplies are low.
_______________
57.
The reintroduction program was a success because the young birds were released back into their natural ____ and survived.
_______________
58.
Birds of ____ use their talons to catch their dinner.















POST TEST  -  Biomes and Ecosystems

1.
What are biomes?



2.
What are ecosystems?



3.
______ have trees with cones.
  Tropical dry forests
  Tropical rainforests
  Temperate forests
  Cold climate forests
4.
Plants in deserts have to survive large amounts of rain each year.
  False
  True
5.
Complete the sentence: Grasslands are areas ______.



6.
Describe tundras.



7.
Where are some tropical rainforests found on Earth?



8.
What are grasslands called in the United States?







FOOD WEB
Food Webs 
By Cindy Grigg
  


1     Every living thing needs food. People enjoy eating food. But that's not the reason we eat. People eat to stay alive. We need food so we can grow. We need food for the energy to do things. Our bodies change our food into energy. We use energy when our hearts beat. We use energy when our lungs breathe. We need energy to stay alive. We use the energy to walk, talk, read, sleep, think, and dream.



 2     Just like us, animals of all kinds need food, too. Food and its energy move from one living thing to another. In the ocean, big fish eat little fish. Little fish eat smaller animals or plants that live in the ocean. Food and energy move in a path we call the food chain. It's usually not a straight path. There can be links between many different things. If we draw a picture of the path that food's energy moves in, it begins to look more like a spider web. So the food chain is often called the food web, too. A food web is a diagram or drawing that shows how living things get energy.
 



3     The food of almost every living thing begins with sunlight. Green plants can use sunlight to make their own food. Even plants that live in the ocean do this. Some of the smallest living things in the ocean are algae. They are so simple they are not even called plants. Algae don't have roots or stems. They don't even have true leaves. Many of them can't be seen without a microscope. Just because they're so small we can't see them doesn't mean they aren't important. These tiny, floating living things are very important! They use sunlight to make their own food. As they do this, they make oxygen for us and all animals on Earth to breathe.
 


4     Algae are food for tiny little floating animals. Together the floating algae and animals are called plankton. Plankton is food for all kinds of animals that live in the ocean. Krill are small shrimp-like animals that live in the ocean. Krill eat plankton. Many animals eat krill. Let's say a seal eats the krill. Then a killer whale might come along and eat the seal. If we were drawing this food chain, we would start with sunlight. Plankton would be the next link in the chain. Then krill comes next because krill eat plankton. The seal would be the next link. Then the killer whale is next. We say the killer whale is at the top of the food chain.
 5     Sooner or later the killer whale will die. At least some of its body will sink to the ocean floor. Tiny living organisms will feed on the remains. The food and energy stored in the killer whale's body will now go to feed the tiny organisms, and the cycle of the food chain will start over.
 


6     But krill eat other things besides plankton. And killer whales don't just eat seals. Most animals don't just eat one type of food. Most animals aren't just eaten by one type of predator, either. Predators hunt, kill, and eat other animals. The animals they hunt are calledprey. Carnivores are animals that eat the meat of other animals. Herbivores are animals that eat only plants. Animals that eat both plants and animals are called omnivores. The chain becomes a web, with many different animals feeding on others. Krill is food for seabirds, whales, and penguins, too. Krill is a part of many food webs.
 


7     Each living thing has its special place in the food web. This place is called their niche. Green plants and algae that make their own food using energy from the sun are called producers. Living things that feed on producers are called consumers. Consumers cannot make their own food. Decomposers, like fungi and bacteria, break down the remains of dead organisms and their wastes. For example, a dead tree rots. Bacteria and fungi break down the remains of the dead tree. Nutrients are returned to the soil. Then trees living nearby absorb the nutrients and use them to stay alive and grow. Matter that is no longer living is recycled by decomposers. Each animal has a special place in its community of plants and animals. A community is a place where plants and animals interact with the environment. Almost every living thing becomes food for another living thing. We are all linked in a web of energy that passes from one living thing to another.



Copyright © 2011 edHelper



Assignment=Please copy this activity in your journal and complete each sentence using the words in the word list.
Food Webs


1.Food gives us ______.
  Energy
  Oxygen
  Sunlight
  All of the above
2.Living things like green plants and algae that make their own food using energy from the sun are called ______.
  Consumers
  Predators
  Prey
  Producers
3.Food and energy move in a path called a ______.




4.The food of almost every living thing begins with ______.
  Vegetables
  Meat
  Water
  The sun
5.Algae that live in the ocean are very important because ______.
  As part of plankton, they are food for many different living things.
  They make oxygen for us to breathe.
  Algae are food for tiny little floating animals.
  All of the above
6.Animals that eat only plants are called ______.
  Consumers
  Decomposers
  Omnivores
  Herbivores



Name _____________________________
Date ___________________
Food Webs


7.Animals that cannot make their own food are called _________.
  Omnivores
  Consumers
  Decomposers
  Herbivores
8.Animals that eat both plants and animals are called _________.
  Decomposers
  Omnivores
  Consumers
  Herbivores
9.Animals that eat meat are called ___________.
  Herbivores
  Omnivores
  Decomposers
  Carnivores
10._________ break down the remains of dead organisms and their wastes.
  Omnivores
  Herbivores
  Consumers
  Decomposers




Food Webs
Assignment=Please answer this question in your journal. Draw your own food web. What do you eat? List several different foods you like to eat. How did each of those things get its energy when it was living? Can you go back another step to something before that? Make a list, and then draw a web of connections between the things you listed.














Food Webs
Assignment=Please answer this question in your journal. Think about an animal in nature. What does it eat? Does anything eat the animal? Make a food web for your animal.












Food Webs
Assignment=Please answer this question in your journal. Write one paragraph describing what a food web is.






Assignment=Please copy this activity in your journal and complete each sentence using the words in the word list.
Food Webs 
By Cindy Grigg
  



roots
killer
often
kill


reason
environment
microscope
besides


dream
people
decomposers
living


community
simple
chain
shrimp-like


Directions:  Fill in each blank with the word that best completes the reading comprehension.

     Every living thing needs food. (1)  _______________________   enjoy eating food. But that's not the(2)  _______________________   we eat. People eat to stay alive. We need food so we can grow. We need food for the energy to do things. Our bodies change our food into energy. We use energy when our hearts beat. We use energy when our lungs breathe. We need energy to stay alive. We use the energy to walk, talk, read, sleep, think, and(3)  _______________________  .
     Just like us, animals of all kinds need food, too. Food and its energy move from one living thing to another. In the ocean, big fish eat little fish. Little fish eat smaller animals or plants that live in the ocean. Food and energy move in a path we call the food chain. It's usually not a straight path. There can be links between many different things. If we draw a picture of the path that food's energy moves in, it begins to look more like a spider web. So the food chain is (4)  _______________________   called the food web, too. A food web is a diagram or drawing that shows how living things get energy.
     The food of almost every living thing begins with sunlight. Green plants can use sunlight to make their own food. Even plants that live in the ocean do this. Some of the smallest living things in the ocean are algae. They are so (5)  _______________________   they are not even called plants. Algae don't have (6)  _______________________   or stems. They don't even have true leaves. Many of them can't be seen without a(7)  _______________________  . Just because they're so small we can't see them doesn't mean they aren't important. These tiny, floating living things are very important! They use sunlight to make their own food. As they do this, they make oxygen for us and all animals on Earth to breathe.
     Algae are food for tiny little floating animals. Together the floating algae and animals are called plankton. Plankton is food for all kinds of animals that live in the ocean. Krill are small (8)  _______________________   animals that live in the ocean. Krill eat plankton. Many animals eat krill. Let's say a seal eats the krill. Then a (9)  _______________________   whale might come along and eat the seal. If we were drawing this food chain, we would start with sunlight. Plankton would be the next link in the (10)  _______________________  . Then krill comes next because krill eat plankton. The seal would be the next link. Then the killer whale is next. We say the killer whale is at the top of the food chain.
     Sooner or later the killer whale will die. At least some of its body will sink to the ocean floor. Tiny living organisms will feed on the remains. The food and energy stored in the killer whale's body will now go to feed the tiny organisms, and the cycle of the food chain will start over.
     But krill eat other things (11)  _______________________   plankton. And killer whales don't just eat seals. Most animals don't just eat one type of food. Most animals aren't just eaten by one type of predator, either. Predators hunt, (12)  _______________________  , and eat other animals. The animals they hunt are called prey. Carnivores are animals that eat the meat of other animals. Herbivores are animals that eat only plants. Animals that eat both plants and animals are called omnivores. The chain becomes a web, with many different animals feeding on others. Krill is food for seabirds, whales, and penguins, too. Krill is a part of many food webs.
     Each living thing has its special place in the food web. This place is called their niche. Green plants and algae that make their own food using energy from the sun are called producers. Living things that feed on producers are called consumers. Consumers cannot make their own food.(13)  _______________________  , like fungi and bacteria, break down the remains of dead organisms and their wastes. For example, a dead tree rots. Bacteria and fungi break down the remains of the dead tree. Nutrients are returned to the soil. Then trees living nearby absorb the nutrients and use them to stay alive and grow. Matter that is no longer living is recycled by decomposers. Each animal has a special place in its(14)  _______________________   of plants and animals. A community is a place where plants and animals interact with the(15)  _______________________  . Almost every living thing becomes food for another (16)  _______________________   thing. We are all linked in a web of energy that passes from one living thing to another.
 


Copyright © 2011 edHelper

Please click this game below about predator and prey and play it.

http://www.pbs.org/wgbh/evolution/survival/coral/index.html

Please summarize what you think the lesson from the game is  in your journal (3-5 sentences)

Food Webs


1.Food gives us ______.
  Energy
  Oxygen
  Sunlight
  All of the above
2.Living things like green plants and algae that make their own food using energy from the sun are called ______.
  Prey
  Predators
  Producers
  Consumers
3.Food and energy move in a path called a ______.




4.The food of almost every living thing begins with ______.
  Water
  Vegetables
  Meat
  The sun
5.Algae that live in the ocean are very important because ______.
  As part of plankton, they are food for many different living things.
  They make oxygen for us to breathe.
  Algae are food for tiny little floating animals.
  All of the above
6.Animals that eat only plants are called ______.
  Omnivores
  Decomposers
  Herbivores
  Consumers



Name _____________________________
Date ___________________
Food Webs


7.Animals that cannot make their own food are called _________.
  Consumers
  Decomposers
  Omnivores
  Herbivores
8.Animals that eat both plants and animals are called _________.
  Decomposers
  Herbivores
  Omnivores
  Consumers
9.Animals that eat meat are called ___________.
  Herbivores
  Carnivores
  Omnivores
  Decomposers
10._________ break down the remains of dead organisms and their wastes.
  Herbivores
  Consumers
  Omnivores
  Decomposers

ASSIGNMENT= Please click the website below  and play the game.
Then 1) Explain in your journal exactly what happened.  and 
2) Explain in your journal why you think it happened in the way it did? 

POST TEST
ESSENTIAL QUESTIONS
1.    What is an ecosystem?
2.    What are the levels of organization within an ecosystem?
3.    How do biotic factors differ from abiotic factors?
4.    What basic needs are provided by an organism’s habitat?
5.    Why do ecologists study both biotic and abiotic factors in an ecosystem?
6.    What is a niche?
7.    What factors limit the size of a population?
8.    Why do populations’ sizes increase and decrease?
9.    How is birth rate related to population size? death rate?
10. How are predator and prey populations related?
11. What are the three major types of interactions among organisms?