Water and Air Pollution: Causes, Effects and Control

This chapter explains what pollution and pollutants are, then examines the major causes and effects of water pollution (industrial waste, sewage, farm runoff, plastic) and air pollution (vehicle exhaust, factory smoke, s…

• Pollution is the contamination of the environment by harmful substances called pollutants.
• A pollutant is any substance that harms the environment or living things when present in excess.
• Whether a substance is a pollutant depends on its amount, location, and harmful effects.

Full explanation, worked examples & memory tricks in the app