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Global Warming. Global Warming-How Will It Affect You? Global warming is one
of the last things on most people's minds. However, global ...
global warming. Global warming is an increase ... There are many misconceptions
about global warming. Some believe that pollution causes ...
how the ‘Greenhouse’ effect promotes global warming and discusses the impacts
of global warming. This essay gives an explanation ...
Submitted by marijeva on April 1, 2008
Category: Social Issues
Words: 933 | Pages: 4
Views: 236
Popularity Rank: 47,315
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Global Warming
Global warming refers to an increase in the average temperature of the earth’s surface This occurs when greenhouse gases trap sun’s heat and light in the earth’s atmosphere, which increases the temperature. They warm the world
•Greenhouse gases are:
Carbon Dioxide (CO2),
Water Vapor (clouds),
Nitrous Oxide (N2O) and
Methane (CH4),
The gases allow sunlight in, which warms the earth. This heat bounces off the earth as infrared radiation. Greenhouse gases such as water vapor (clouds) and carbon dioxide (CO2) trap and retain the heat.The greenhouse effect is necessary to make life possible on earth.
Causes of Global Warming
Scientists have two views:
a) Global Warming is due to earth’s natural cycle of warming and cooling.
b) Global Warming is the result of human activities.
Historical evidence demonstrates that since industrialization humans are dramatically contributing to the “greenhouse effect†such as:
 Pollution from factories
 Carbon Dioxide from burning fossil fuels such as coal, gas, oil
 Deforestation
The most important greenhouse gas is carbon dioxide (CO2). First producer of CO2 is from the burning of fossils fuels, increased 80% in the last twenty years. The second is deforestation that produces 20-25%. Since 1750, levels of atmospheric concentration of CO2 have increased by 31% percent above the pre-industrial levels. In 2000, the atmospheric concentration of CO2 was of 383 parts per million (ppm) by volume
Effects of Global Warming
• NASA reports that 2005 ranks as the hottest year on record, matching 1998
• The global average temperature has increased 1.1oF (0.6oC)
• Affecting the ecological productivity. Higher...
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