pollution

Everyday

1. Pollution is dirt, poison or waste in the air, water or land that harms living things. tree →
2. The act of making things dirty and harmful. tree →
3. Unwanted noise or light: noise pollution, light pollution. tree →

In the lessons

Used in science and geography: air pollution from cars and factories, water pollution, plastic pollution in the oceans. Light pollution hides the stars at night. Lessons explain how to reduce pollution: recycle, walk, use less plastic.

Examples

• Air pollution can make it hard to breathe. tree →
• Plastic pollution harms sea turtles. tree →
• Cities have more light pollution, so you see fewer stars. tree →
• We made posters about pollution. tree →
• The river was cleaned and the pollution went down. tree →
• Noise pollution from the airport keeps people awake. tree →
• Walking to school reduces pollution. tree →

Note

Uncountable: "a lot of pollution", not "pollutions". Verb: pollute. Kinds: air, water, land, noise, light, plastic pollution.