Populations and the Environment

Question 1

Check all of the items that are cycled through the biosphere in biogeochemical cycles.

Revolt · Accepted Answer

A: water; B: matter; C: nitrogen; D: phosphorus; E: carbon

Question 2

The cycle repeats when the carbon stored in the atmosphere as carbon dioxide gas is taken in.

Revolt · Accepted Answer

C: Step four

Question 3

Identify the importance of water. Check all that apply.

Revolt · Accepted Answer

A: It ensures life on Earth can exist.; C: It is used by plants for photosynthesis.; D: It is the main component of many biological components, including blood.

Question 4

Identify the importance of carbon. Check all that apply.

Revolt · Accepted Answer

A: It ensures life on Earth can exist.; C: It is a part of all organic compounds, including carbohydrates and nucleic acids.; D: It is found in every living thing.

Question 5

The animal releases the carbon dioxide back into the atmosphere during respiration.

Revolt · Accepted Answer

B: Step three

Question 6

The animal eats a plant and uses its carbohydrates for energy.

Revolt · Accepted Answer

A: Step two

Populations and the Environment Answers

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