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Greenhouse Gases And Consequences
Beginning of essay
The greenhouse effect is a natural phenomenon that warms the earth and enables it to support life. Without it, the average temperature on earth would be around -18 degrees C, instead of the current +15 degrees C - a frozen wilderness. It works on the same principles as the ordinary glass garden gre ....
Middle of essay
....ration of CO2 is rising by 0.4% per year. Methane has increased from about 750 parts per billion to 1700 parts per billion over the past 200 years, and nitrous oxide appears to be increasing at a rate of about 0.3% per year.
As the various greenhouse gases accumulate in the atmosphere, the amount of infrared radiation that is trapped increases. It is estimated that if we continue at our current rate of CO2 emissions alone, the average global temperature will rise by 1.5 to 4.5øC over the next 40.... |
| Number of words: 1452 |
Approximate pages: 6 |
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