Global Warming by Santiago Cordoba 5AP Presentation Transcript
Global warming is a term commonly used:
It is a phenomenon in the temperature measurements showing an increase in average temperature of earths atmosphere and oceans in recent decades.
Use of fossil fuels (coal and oil) as sources of energy in industry and transport.
Forest fire could leave at any time (if it has not happened al ready) be a constant natural organic into a variable in the equation of antropoghenic global warming , and that excesive forest fire , cuased by humans hands, could be implicated as a prime variable in the acelerattion of global warming.
Common activities like burning fossil fuel and coal , oil and gas an the destruction of forests, have become major causes of air emission of carbon dioxide .
As the planet warms, ice caps melt. Besides the heat of the sun when it reaches the poles, is reflected back into space. As ice caps melt, the lower the amount of heat that is reflected, which will cause the earth to warm even more. Global warming will also cause more water to evaporate from the oceans. Water vapor acts as a greenhouse gas. So there will be greater warming. This contributes to the so-called "leverage effect". Deserts tend to expand, the sands of North Africa may invade the Mediterranean, and may return dust storms in the American Midwest.