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Using the diagram above, what three sources contribute to carbon dioxide in the atmosphere?

Cellular respiration

Decomposition

Photosynthesis

Burning

1 answer

The three sources that contribute to carbon dioxide in the atmosphere are:

  1. Cellular respiration - Organisms release carbon dioxide as a byproduct of metabolic processes.

  2. Decomposition - The breakdown of organic matter by decomposers releases carbon dioxide into the atmosphere.

  3. Burning - The combustion of fossil fuels and organic materials emits carbon dioxide as a byproduct.

Photosynthesis, on the other hand, contributes to the removal of carbon dioxide from the atmosphere, as plants take in CO2 to produce oxygen and glucose.