Across
- 1. energy produced by a nuclear reactor
- 3. when a place is covered with water
- 6. gas or smoke which is usually dangerous
- 8. too many people in a place for the amount of food
- 9. place where people, plants and animals live
- 11. use waste materials again
- 15. gases especially carbon dioxide
- 16. changes in the planet’s weather, particularily causing it to get warmer
- 18. the gradual warming of the Earth due to pollution and gases
- 20. animals, birds, and plants living in their natural habitat
- 21. lots of cars, lorries ect using roads
- 22. the increasing level of the sea’s surface
- 24. roads which are blocked with traffic
- 25. using more of something than can be replaced naturally
- 27. free from artificial chemicals, in food and animals
- 28. reduce, use less of something
- 29. release of harmful materials into the environment
Down
- 2. animals or plants that may soon be extinct
- 4. a situation where an animal or plant does not exist
- 5. amount of carbon dioxide produced by a person or company’s activity
- 7. a special panel which converts sunlight into electricity
- 10. poisonous waste
- 12. fuel that comes from the ground, such as oil or coal
- 13. natural sources of energy which don’t run out
- 14. process of cutting down trees in a large area
- 17. energy from the sun
- 19. energy that is clean and doesn’t pollute
- 23. friendly not harmful to the environment
- 26. able to break down naturally