Question

select the correct answer.
which of the following is a major disruptor of the carbon cycle?
a. use of chemical fertilizers
b. volcanic eruptions
c. acid rain
d. burning of fossil fuels

Explanation:

• Chemical fertilizers primarily disrupt the nitrogen cycle, not the carbon cycle.
• Volcanic eruptions release carbon, but they are natural and infrequent, not a major human-caused disruptor.
• Acid rain is a result of sulfur and nitrogen emissions, not a direct carbon cycle disruptor.
• Burning fossil fuels releases massive amounts of stored carbon (as $\text{CO}_2$) into the atmosphere far faster than natural processes can sequester it, drastically altering the carbon cycle.

Answer:

D. burning of fossil fuels