1									2
								3
													4		5
					6
						7
	8
9				10													11
								12
13
	14
			15

Across 6. The study of how living things interact with each other and their environment 8. Destruction of forests 12. To use less of something 13. A species whose numbers are so small that the species is at risk of extinction 14. Places where animals or plants naturally live and grow 15. The surroundings or conditions in which a person, animal, or plant lives or operates.

Down 1. Something that causes great damage or harm 2. Convert waste into reusable material. 3. Release of harmful materials into the environment 4. Warming that results when solar radiation is trapped by the atmosphere 5. A gradual increase in average global temperature 7. Chemicals that kill crop-destroying organisms 9. A gas molecule that is made up of three oxygen atoms 10. A term that typically describes a species that no longer has any known living individuals. 11. A pollutant released into the atmosphere