1					2															3						4
																								5
					6
	7															8						9
												10
11							12
		13
																													14
15																											16
										17				18
			19
							20																21
		22
																				23
24
																					25
										26								27
																							28
					29							30
																						31
32														33
																		34
						35
																	36
						37

Across 1. Easily decomposed 6. Animals at risk of disappearing from our planet (2 Words) 7. Cultivated naturally 10. When sand begins to take over an area 13. Minerals, forests, coal and natural gas, for example (2 Words) 15. Cutting down trees 20. Too much water 22. Intensive farming method (2 Words) 23. A natural disaster 24. Many people disapprove of these as a place to keep animals 25. Process waste to be used again 26. Often called the lungs of the planet (2 Words) 28. A natural disaster 29. Resources that are always available or are naturally replaced over time 31. A long, high destructive sea wave 32. A biological community of interacting organisms and their surroundings 34. Illegal hunting 35. There are many forms of this - land, air, water 36. An area where building is completely banned or restricted (2 Words) 37. A lack of water

Down 2. When gases prevent heat from leaving the Earth (2 Words) 3. A way of increasing the birth rate of animals at risk (2 Words) 4. A natural disaster 5. The variety of plants and animals living in a particular environment 8. Campaigners for the environment 9. The natural home of living things 11. Polluted precipitation (2 Words) 12. Intensive farming method (2 Words) 14. Something that prevents the sun from harming the Earth (2 Words) 16. Caused by movements in the Earth's crust 17. The phenomenom that pollution is causing (2 Words) 18. Animals that no longer exist 19. Cars produce these noxious gases (2 Words) 21. Chemicals used to spray plants 27. An alternative to a zoo (2 Words) 30. These groups fight for animal rights 32. Gradual wearing away of soil 33. A vortex of violent winds