Question

Assertion (A): The recycling of carbon is essentially a self-regulating feedback system in nature.

Reason (R): In the atmosphere the reservoir pool of carbon consists of free CO₂.

Options

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

Explanation:

Carbon recycling is self-regulating because photosynthesis, respiration, decomposition and combustion balance the movement of carbon. Atmospheric CO₂ is indeed a reservoir pool, but this fact alone does not explain the self-regulating feedback system.