Question
Carbon is returned into the atmosphere (as carbon dioxide) because of the __ that happens in plant and animal cells.
Answer
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Ibrahim
Professional · Tutor for 6 years
Answer
Cellular respiration
Explanation
The process by which carbon is returned to the atmosphere as carbon dioxide is called cellular respiration. In this process, organic molecules such as glucose are oxidized to produce carbon dioxide, water, and energy. This energy is then used by the cells to perform their various functions. Cellular respiration happens in both plant and animal cells. However, it is notable that while animal cells only perform respiration, plant cells carry out respiration and photosynthesis. The latter absorbs carbon dioxide from the atmosphere. In the context of the carbon cycle, cellular respiration, therefore, helps to regulate levels of atmospheric carbon dioxide.