The Carbon Cycle: Main Source of Carbon in the Atmosphere

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Where is the primary source of usable carbon for plants in the carbon cycle?

Soil

Other living organisms

Atmosphere (correct)

Water bodies

What distinguishes the carbon cycle from the nitrogen and phosphorus cycles?

Direct consumption by living organisms

Primary role in energy storage

Global nature due to carbon dioxide being a gas (correct)

Local dependency on soil concentrations

How do changes in local concentrations of usable nitrogen and phosphorus affect ecosystems compared to changes in the carbon cycle?

Global consequences

No impact on ecosystems

More localized consequences (correct)

Minimal effects on living organisms

What is the primary role of carbon in living organisms?

Energy storage, transfer, and usage Signup and view all the answers

How do consumers primarily obtain carbon for their needs?

By consuming other organisms Signup and view all the answers

What process do autotrophs use to convert light energy into chemical energy?

Photosynthesis Signup and view all the answers

How do plants return a lot of the carbon back into the atmosphere?

Through cellular respiration Signup and view all the answers

Where is the largest pool of carbon in the world located?

In deep ocean sediments Signup and view all the answers

What is the main way detritivores release carbon back into the air?

Via cellular respiration Signup and view all the answers

What role do wildfires play in the global carbon cycle?

Returning carbon dioxide back into the atmosphere Signup and view all the answers

The Carbon Cycle: Main Source of Carbon in the Atmosphere

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Questions and Answers

Where is the primary source of usable carbon for plants in the carbon cycle?

What distinguishes the carbon cycle from the nitrogen and phosphorus cycles?

How do changes in local concentrations of usable nitrogen and phosphorus affect ecosystems compared to changes in the carbon cycle?

What is the primary role of carbon in living organisms?

How do consumers primarily obtain carbon for their needs?

What process do autotrophs use to convert light energy into chemical energy?

How do plants return a lot of the carbon back into the atmosphere?

Where is the largest pool of carbon in the world located?

What is the main way detritivores release carbon back into the air?

What role do wildfires play in the global carbon cycle?

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