EOC REVIEW: ECOLOGY- The Carbon Cycle

Question 1

What are the three biogeochemical cycles?

Answer 1

The Carbon Cycle, the Nitrogen Cycle, and the Phosphorus Cycle.

Question 2

Why do organisms need carbon?

Answer 2

They need carbon to form organic macromolecules.

Question 3

What are the two types of carbon?

Answer 3

Inorganic (dissolved) and organic (solid)

Question 4

What is the first step of the carbon cycle?

Answer 4

Carbon dioxide is incorporated into organic solids through photosynthesis.

Question 5

What is the second step of the carbon cycle?

Answer 5

Carbon dioxide is passed along the food chain through consumers.

Question 6

What is the third step of the carbon cycle?

Answer 6

Cellular respiration and decomposers return carbon dioxide to the atmosphere.

Question 7

How do humans impact the carbon cycle?

Answer 7

The burning of fossil fuels and vehicle exhaust increases carbon dioxide levels in the atmosphere.

Question 8

Where is carbon stored as pools?

Answer 8

The atmosphere and in fossil fuels.