♻️ap environmental science review

Toxicity

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

Toxicity refers to the degree to which a substance can harm living organisms. It measures the potential of a substance to cause adverse effects on health, ranging from mild irritation to severe illness or death.