52. Ecosystems
Ecosystems
Multiple Choice
Multiple ChoiceWhich of the following is a key part of the carbon cycle?
A
Return of CO2 to the atmosphere by burning fossil fuels
B
Assimilation of atmospheric CO2 by plant photosynthesis
C
Return of CO2 to the atmosphere by animal and plant respiration
D
Breakdown by decomposers of carbon-containing dead plants and animals
E
All of the listed responses are correct.
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