♻️ap environmental science review

Ethanol

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

Ethanol is a type of alcohol that is produced from renewable resources such as corn, sugarcane, or switchgrass through fermentation. It is commonly used as a biofuel additive in gasoline to reduce greenhouse gas emissions.