Science Unit 2 Mod 2

The part of Earth where all living things are found is called the _____.

• hydrosphere

• atmosphere

• biosphere

• geosphere

Animals can obtain the energy they need to survive and carry out life processes by eating plants or eating animals that eat plants.

• True

• False

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How do producers affect an entire ecosystem? 

• Every organism in the ecosystem relies on producers because they take energy from the sun to make food. Other organisms use that energy to survive.

• Producers are at the top of the food chain.  They can eat all other organisms. 

  
  

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  Producers eat more than any organism in the ecosystem.  Other organisms have trouble surviving because of producers.

  
  t

• Producers make their own food, so they do not affect any other organisms in the ecosystem.

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The ___________ includes all the gases around Earth. 

• hydrosphere

• crust

• atmosphere

• cloud

Producers are at the beginning of a food chain because they make their own food.  Other living things consume producers to survive.

• True

• False

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Which is not an example of how a change in one of Earth’s systems may affect another system? 

• Lack of rain dries up vegetation on Earth. 

• Smoke blocks sunlight from reaching Earth. 

• Bears hibernate during the cold winter months.

• Heavy rain washes away soil and rocks from a hillside. 

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A __________  is an organism that makes its own food. Some of this food is used by other organisms.

• consumer

• the sun

• producer

• abiotic factor

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Organisms at the beginning of a food chain are called _____. 

• consumers

• predators

• omnivores

• producers

An organism that must eat another organism to obtain energy for survival is known as a _____________. 

• producer

• consumer

• decomposer

• prey

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Which of the following would NOT appear in a forest food web? 

• a mouse that eats a grasshopper   

• a bear that eats nuts and berries  

• an owl that eats a snake 

• a giraffe that eats leaves

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