Environmental problems

4. waste This term refers to non-liquid waste, especially garbage.
7. This word means “to burn waste materials at high temperatures.”
8. gas is released into the air and contributes to air pollution.
9. This material is used for packaging and insulation and is made from polystyrene.
10. gas These are gases like CFCs and HFCs that damage the ozone layer.
11. energy The type of energy released by the sun.
12. The scientific word for the act of making something less or smaller.
13. A harmful substance released into the environment.

1. A material that allows very little heat or sound to pass through.
2. This word means something can break down naturally over time.
3. A term for the gradual warming of the Earth’s atmosphere.
5. layer The layer in the atmosphere that protects us from UV radiation.
6. A synonym for catastrophe, often used for natural or man-made tragedies.
9. When a harmful chemical spreads in the air after a nuclear explosion.
14. rays These rays from the sun are harmful and filtered by the ozone layer.