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Essay on global warming

This is the first 1,000 characters of 780 words (3.12 pages) in the essay titled global warming

Global Warming, aside from pollution is one of scientists biggest

concerns. Global Warming is caused by the Greenhouse effect.

There are 4 steps in the Greenhouse effect. 1-Sunlight radiates

from the sun, through space, to EarthÆs atmosphere. 2- The

sunlight enters the atmosphere and hits Earth. Some of it turns

into heat energy in the form of infrared light. The heat gets

absorbed by surrounding air and land, which in turn makes it

warm. 3- Infrared rays, that are remitted into the atmosphere are

trapped by greenhouse gases. 4- The gas then absorbs the light

and is remitted back to the EarthÆs surface and warms it even

more. Some of the naturally occurring greenhouse gases are

Methane and carbon dioxide. This is the way the Earth keeps

itself warm enough for humans to live on it.

The only problem with this is that humans enhance the process

even more. Over the past 200 years the emissions of greenhouse

gases have been increasing due to the increase in technology that

humans have developed (example, factories). These human-induced

gases include carbon dioxide, methane, nitrous oxide, and ozone

depleting substances such as CFCs, also known as

Chlorofluorocarbons, hydrofluorocarbons, and perfluorocarbons.

These gases are generated a number of human activities

such as fossil fuel combustion, waste disposal in landfills, the

use of a refrigerator, numerous agricultural and industrial

activities, and the cutting down of numerous forest...

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Keywords: greenhouse gases, greenhouse effect, gases in the air, back to the earth, atmosphere, air pollution, ozone depleting substances, carbon dioxide, global warming, perfluorocarbons, human practices, remitted, methane, sunlight, cfcs, nitrous oxide, heat energy, fossil fuel combustion, infrared rays, combustion waste

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