♻️ap environmental science review

Coal

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

Coal is a combustible black or brownish-black sedimentary rock made up mostly of carbon. It forms from the remains of plants that lived and died millions of years ago.