1
																			2
										3												4
																										5
								6
														7														8
																								9								10
										11					12
							13
		14
					15
																	16
													17																	18
	19																																	20
21
				22
23

Across 3. The clearing of trees from land 7. The temperature at which the air becomes saturated with water vapour, so that the water condenses and falls as precipitation 13. A process in which scientific research is reviewed by a panel of science experts before published 17. A major geographical region with a particular combination of environmental conditions and life forms 19. The cycle responsible fir recycling carbon through the biosphere 22. The place where an organism lives or is usually found 23. A panel of 2500 scientists from 70 countries that was formed in 1988 to assess the existing knowledge about climate and climate change

Down 1. A measurement of the quantity of water vapour in the air 2. A set of terms for the reduction of greenhouse gas emissions, proposed in 1997 in Kyoto, Japan 4. A possible result of global warming in which the increase of Earth’s temperature will cause an increase in water vapour in the atmosphere, which may result in the formation of more clouds, having a cooling effect 5. A possible result of global warming in which the increase of Earth’s temperature will cause an increase in water vapour in the atmosphere, which may result in a further increase of Earth’s temperature 6. The natural surface that breaks down materials at Earth’s surface 8. Complex mathematical models that use supercomputers to analyze and make quantative projections of future climate change 9. An adaptation that has to do with the way an organism functions (e.g., the changes in an organism’s body when it hibernates) 10. Any behaviour of an organism that allows it toAny behaviour of an organism that allows it to better survive and reproduce in an environment (e.g., migration) 11. An adaptation that affects the appearance or shape of the physical features of an organism (e.g., thick fur) 12. The principle that, in order to protect the environment, lack of full scientific certainty will not be used as a reason to postpone measures to prevent environmental damage 14. In evolution, any characteristic that allows and organism to better survive and reproduce in an environment 15. The study of past climates 16. The replanting of trees 18. A graphical representation of climate data for a specific region and time period 20. The hypothesis that Earth is a single, living organism 21. A major source or reservoir of carbon compounds