What process adds carbon dioxide to the air?

Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement

Explanation:

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Explanation:

respiration adds carbon dioxide to air.

..mm,

it has one origin of replication, but it proceeds in two directions - d)