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Like the glass in a greenhouse, certain gases that occur naturally in the atmosphere tend to trap the suns heat. This natural " greenhouse effect" helps keep the Earths average temperature at a comfortable 59? Fahrenheit. Without these greenhouse gases, the Earth would be about 0?
F, like a deep- frozen snowball. But human activities are causing some greenhouse gases, such as carbon dioxide, to build up in the atmosphere. Whenever we burn fossil fuels (gasoline, oil, coal or natural gas), more carbon dioxide is emitted to the atmosphere. Forest destruction and agriculture also release greenhouse gases. If we do not act to reduce our emissions of these heat-trapping gases, it is predicted that global temperature could rise 2?
to 6? F in the next 100 years. Just a few degrees difference in the global average temperature can mean a major climate change. Why Act Now? Global warming is not like turning on a heater; we cant just turn it off afterwards if the Earth warms too fast for comfort. Once we emit greenhouse gases into the atmosphere, most of them remain there for decades, continuing to trap heat.
If we wait until all the consequences became obvious, it could be too late to do much about them. These children are cooling off in a fountain in Manhattan, where about 15 days each year are over 90? F. By the middle of the next century, 48 days a year could be that hot.
But we can act now to insure against the risk of disruptive future warming, by reducing our greenhouse gas emissions today. The exhibition describes many practical options that could not only cut these emissions but also save money and reduce air pollution.
Free research essays on topics related to: greenhouse, gases, greenhouse gases, average temperature, carbon dioxide
Research essay sample on Greenhouse Gases Carbon Dioxide
