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The enhanced greenhouse effect What has scientists concerned now is that over the past 250 years, humans have been artificially raising the concentration of greenhouse gases in the atmosphere at an everincreasing rate, mostly by burning fossil fuels, but also from cutting down carbonabsorbing forestsThe greenhouse effect is a warming of Earth's surface and the air above it It is caused by gases in the air that trap energy from the sun These heattrapping gases are called greenhouse gases The most common greenhouse gases are water vapor, carbon dioxide, and methane Without the greenhouse effect, Earth would be too cold for life to exist Amplifying the greenhouse effect Like other gases in the atmosphere, including oxygen and nitrogen, greenhouse gases are largely transparent to incoming sunlight But unlike those gases, greenhouse gases are not transparent to outgoing heat (longwave infrared radiation), which radiates from the sunwarmed surface of Earth day and night Greenhouse Effec...

Coral reefs are very important for biodiversity as they provide homes to more than 25% of marine life If there is no action taken towards global warming and the greenhouse effect, the oceans temperatures will continue to rise and scientists predict that if this continues to happen, 97% of the Great Barrier Reef will be bleached Main effects of global warming There are two major effects of global warming Increase of temperature on the earth by about 3° to 5° C (54° to 9° Fahrenheit) by the year 2100 Rise of sea levels by at least 25 meters ( feet) by the year 2100 More details and secondary effects of global warming7/9/07 The 'greenhouse effect' is the warming of climate that results when the atmosphere traps heat radiating from Earth toward space Certain gases in the atmosphere resemble glass in a greenhouse, allowing sunlight to pass into the 'greenhouse,' but blocking Earth's heat from escaping into space The gases that contribute to the greenhouse effect include ...