Question

The pair of processes which return CO2 to atmosphere are

Answer 1

Answer:

Respiration

Explanation:

Decomposers break down the dead organisms and return the carbon in their bodies to the atmosphere as carbon dioxide by respiration.

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Answer 2

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Answer:

Returning carbon dioxide to the atmosphere

Carbon dioxide is released to the atmosphere through respiration by animals, plants and microorganisms. It is also released by the combustion of wood and fossil fuels (such as coal, oil and natural gas).