Across
- 4. a large amount of water covering an area
- 5. ______ effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat
- 9. effort to protect wildlife and natural resources
- 11. disappearance of a plant or an animal
Down
- 1. the act of cutting down or burning the trees/forests
- 2. coal and gas, for example
- 3. the situation in which the Earth becomes hotter and hotter
- 6. a layer in atmosphere which absorbs ultraviolet radiation.
- 7. fumes released from vehicles or factories
- 8. a type of renewable power
- 10. to use or take advantages of something