Question

carbon cycle
photosynthesis and cellular respiration play an important role in the cycling of carbon among the biosphere, atmosphere, hydrosphere, and geosphere. provide an explanation for which letter best represents the role of photosynthesis in the carbon cycle.
a e, because co₂ is being used by photosynthetic algae.
b d, because co₂ from animal wastes are being released back into the atmosphere.
c a, because co₂ being produced by plants in photosynthesis is being released into the atmosphere.
d b, because co₂ from the atmosphere is being used in the process of photosynthesis to produce glucose.

Explanation:

Photosynthesis is the process by which plants (including photosynthetic algae) use \(CO_2\) from the atmosphere (along with water and sunlight) to produce glucose. Option A correctly identifies that \(CO_2\) is used by photosynthetic organisms (in this case, algae which are part of the biosphere interacting with the atmosphere). Option B is about release of \(CO_2\) from animal wastes (related to respiration or decomposition, not photosynthesis). Option C is incorrect as plants in photosynthesis take in \(CO_2\) not produce it (they produce \(O_2\)). Option D has an incorrect letter - it should be related to a part of the diagram where \(CO_2\) is taken in, not the letter B as described in the option's text.

Answer:

A. E, because \(CO_2\) is being used by photosynthetic algae.