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Unformatted text preview: Global Warming Geography 12 Environmental Issues | Page 8 V. GLOBAL WARMING What is global warming? Global warming refers to the increase in the average temperature of the atmosphere, oceans, and landmasses of earth. Acid rain kills trees and aquatic life. No fish life in this lake. What causes global warming? Global warming happens due to the accumulation of greenhouse gases that trap the heat around the earth. Some of the naturally occurring greenhouse gases are methane and carbon dioxide. These gases keep the earth warm enough for humans to live in it. Unfortunately, humans increase the availability of these gases even more. These gases are produced by a number of human activities such as fossil fuel combustion, waste disposal in landfills, cutting down of forests and industrial activities. Global Warming Geography 12 Environmental Issues | Page 9 Why is global warming a problem? The increased temperature of the earth will affect the world. One consequence of global warming is a great drought. The water on the ground will quickly evaporate, causing rivers and lakes to quickly dry up. great drought....
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This note was uploaded on 01/23/2012 for the course GEOGRAPHY 12 taught by Professor Staff during the Fall '08 term at Concordia AB.
- Fall '08