Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Pollutants are harmful substances that contaminate the environment, causing damage to ecosystems and living organisms. They can come from various sources such as industrial waste, vehicle emissions, or agricultural runoff.
Related terms
Air pollution: The presence of harmful substances in the air, such as smog or particulate matter.