AP BIOLOGY

Detailed explanation-1: -Carbon cycles through the biosphere in all the options except transpiration. The correct option is, C. Burning of fossil fuel also releases carbon as carbon dioxide.

Detailed explanation-2: -Carbon is exchanged between the atmosphere and the biosphere largely through the the plant processes of transpiration and respiration – animals get their supply of carbon from eating autotrophic plants.

Detailed explanation-3: -Respiration, excretion, and decomposition release the carbon back into the atmosphere or soil, continuing the cycle. The ocean plays a critical role in carbon storage, as it holds about 50 times more carbon than the atmosphere.

Detailed explanation-4: -Transpiration describes the evaporation of water from the vascular system of plants through leaf pores, or stomata. It couples the biochemical process of leaf carbon uptake through photosynthesis with the biophysical process of moisture exchange [4].