Which statement best compares the carbon cycle and the nitrogen cycle?

Decomposers break down dead organisms and waste, returning carbon compounds to the environment and releasing nitrogen compounds into soil. Carbon fixation occurs, but the nitrogen cycle uses nitrogen fixation rather than both cycles requiring the same kind of fixation. Water cycling and oxygen release are not shared defining processes of both cycles. Therefore, the best comparison is that both involve the work of decomposers.

AI-written and checked against the verified answer.