♻️ap environmental science review

Decomposition

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Decomposition is the process by which organic matter breaks down into simpler substances through the action of decomposers like bacteria and fungi. It plays an important role in nutrient cycling by releasing nutrients back into the environment.