What process do decomposers use to release nutrients, and why is this process essential after a disturbance?

What process do decomposers use to release nutrients, and why is this process essential after a disturbance?

• A. Decomposition breaks down organic matter, releasing nutrients back into soil and water, enabling new plant growth after disturbances.
• B. Photosynthesis uses nutrients from soil for growth.
• C. Respiration releases nutrients from dead matter.
• D. Decomposition consumes nutrients without returning them to the environment.

Answer: (C)

Decomposers release nutrients by breaking down dead plant and animal matter in a process called decomposition, which mineralizes organic nutrients into forms that plants can take up. After a disturbance, much of the available nutrients are locked in dead biomass; decomposition frees these nutrients into the soil and nearby water, supplying the essential building blocks for new plant growth and the recovery of the ecosystem. Photosynthesis uses available nutrients to make sugars; it doesn’t release nutrients from dead matter. Respiration releases energy from sugars and wastes, not nutrients back into the environment. The idea that decomposition consumes nutrients without returning them isn’t accurate because the overall effect of decomposition is to return nutrients to the environment, supporting regrowth.