Question

which of the following statements about photosynthesis and carbon cycling is true? cellular respiration is the breakdown of sugars as oxygen and energy. all carbon on earth is contained in living organisms. carbon cycling occurs in both long - term and short - term cycles. climate is involved in carbon recycling.

Explanation:

Cellular respiration breaks down sugars using oxygen to release energy, but the description in the first option is inaccurate as it incorrectly lists oxygen and energy as products of the breakdown. Not all carbon on Earth is in living organisms; there is also carbon in the atmosphere, soil, and oceans. Carbon cycling indeed occurs in both long - term (e.g., through geological processes like the formation of fossil fuels) and short - term (e.g., through photosynthesis and respiration in living organisms) cycles. While climate can be affected by carbon cycling and can influence it to some extent, the statement about climate being involved in carbon recycling is too general compared to the well - known fact of long and short - term carbon cycles.

Answer:

C. Carbon cycling occurs in both long - term and short - term cycles.