GLOBAL WARMINGGLOBAL WARMING

GLOBAL WARMING GLOBAL WARMING

Global warming is a term commonly used:Global warming is a term commonly used: It is a phenomenon in the temperature measurements It is a phenomenon in the temperature measurements

showing an increase in average temperature of earths showing an increase in average temperature of earths atmosphere and oceans in recent decades.atmosphere and oceans in recent decades.

CausesCauses Use of fossil fuels (coal and oil) as sources of energy in Use of fossil fuels (coal and oil) as sources of energy in

industry and transport.industry and transport. Forest fire could leave at any time (if it has not happened al Forest fire could leave at any time (if it has not happened al

ready) be a constant natural organic into a variable in the ready) be a constant natural organic into a variable in the equation of antropoghenic global warming , and that excesive equation of antropoghenic global warming , and that excesive forest fire , cuased by humans hands, could be implicated as a forest fire , cuased by humans hands, could be implicated as a prime variable in the acelerattion of global warming.prime variable in the acelerattion of global warming.

Common activities like burning fossil fuel and coal , oil and gas Common activities like burning fossil fuel and coal , oil and gas an the destruction of forests, have become major causes of air an the destruction of forests, have become major causes of air emission of carbon dioxide .emission of carbon dioxide .

effectseffects As the planet warms, ice caps melt. Besides the heat of the As the planet warms, ice caps melt. Besides the heat of the

sun when it reaches the poles, is reflected back into space. sun when it reaches the poles, is reflected back into space. As ice caps melt, the lower the amount of heat that is As ice caps melt, the lower the amount of heat that is reflected, which will cause the earth to warm even more. reflected, which will cause the earth to warm even more. Global warming will also cause more water to evaporate Global warming will also cause more water to evaporate from the oceans. Water vapor acts as a greenhouse gas. So from the oceans. Water vapor acts as a greenhouse gas. So there will be greater warming. This contributes to the so-there will be greater warming. This contributes to the so-called "leverage effect". called "leverage effect". Deserts tend to expand, the sands of North Africa may Deserts tend to expand, the sands of North Africa may invade the Mediterranean, and may return dust storms in invade the Mediterranean, and may return dust storms in the American Midwest. the American Midwest.