♻️ap environmental science review

Food chain

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

A food chain is a linear sequence that shows how energy and nutrients are transferred from one organism to another in an ecosystem. It starts with producers (plants) and ends with top consumers (predators).