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

Across 3. The Clean Air Act of 1990 reduced sulfur emissions that caused ____ rain 8. name of the plan that will reduce carbon dioxide and other greenhouse gas emissions in a cost-effective manner 10. when ocean temperatures increase, they release Carbon _____ 12. Which country is the leading greenhouse gas emitter? 13. treaty between UN countries to regulate greenhouse gas emissions

Down 1. a measure of the impact our activities have on the environment 2. warming in Colorado, Arizona, and Oregon caused horrible ______ seasons 4. gases responsible for the temperature increase 5. In 1824, Jean Baptiste Joseph Fourier first discovered that Earth's temp. was slowly ________ 6. increase in the average temperature of the Earth 7. _____ fuels increase global warming 9. _________ kills one thousand Americans for every 1 degree increase in temperature 11. _____ is melting worldwide (around poles)