Biology

The correct answer is: B.Their nitrogen returns to the soil.

When organisms die and decay, decomposers such as bacteria and fungi break down their bodies. This process releases nitrogen compounds (like ammonia, nitrites, and nitrates) back into the soil. These nitrogen compounds can then be absorbed by plants, continuing the nitrogen cycle.

Here's a breakdown of the other options:

A.Their bodies are lifted up: This does not happen when organisms die. Bodies typically decompose on the ground or in water.