Across
- 3. ...effect is the process through when heat is trapped near Earth's surface by harmful gases
- 5. clean,it can be replaced, there are a lot
- 8. the action of clearing a wide area of trees.
- 10. this energy is provided by the sun
- 11. this energy comes from the Earth's core
- 14. the process of species of animals or plants becoming extinct.
- 16. ...fuels:energy sources like gasoline or coal
Down
- 1. water provides this energy
- 2. the process by which vegetation in land decreases and eventually disappears.
- 4. the action or process of converting waste into reusable material
- 6. demage,ruin, demolish, defeat
- 7. materials used to wrap or protect goods
- 9. putting into the environment of a substance which has harmful or poisonous effects.
- 12. ...layer is a thin part of Earth's atmosphere that absorbs almost all of the sun's harmful ultraviolet light.
- 13. it's main ingredient are from plants, so emit less polution
- 15. you can buy it