10 Questions
What is the primary source of usable carbon for plants in the carbon cycle?
Carbon dioxide in the atmosphere
How does the global nature of the carbon cycle differ from the nitrogen and phosphorus cycles?
The carbon cycle is truly global due to carbon dioxide's ability to move through air and water.
Which element is primarily used by living organisms as the main means of energy storage, transfer, and usage?
Carbon
What happens to local ecosystems if there are changes in the local concentrations of usable nitrogen and phosphorus?
Major consequences for the local ecosystem
Why do consumers get their carbon from eating other organisms in the carbon cycle?
To obtain energy stored in carbon compounds
What is the process by which autotrophs convert light energy into chemical energy?
Photosynthesis
What is the main source of energy for animals?
Cellular respiration
What is the process through which oxygen is used to convert organic molecules to carbon dioxide and water for cellular energy?
Cellular respiration
Which process releases carbon dioxide back into the atmosphere similar to wildfires?
Detritivores
Where is the largest pool of carbon found in the world?
Sediments of the deep ocean
Explore the pathways of carbon through living organisms and the environment in the carbon cycle. Learn about the main source of carbon for plants and how it differs from other biogeochemical cycles.
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