Heat from our sun passes through the atmosphere, causing it to warm up. Most of it warms the earth's surface. While the earth is warming up, it sends out this heat in the form of radiation. The atmosphere traps part of the heat, and the rest escapes into space. This effect that takes place on earth is called the Greenhouse Effect. The greenhouse effect is similar to the greenhouse becuse both of them trap heat. The greenhouse effect makes the atmosphere trap radiation, making the earth warmer. The greenhouse stops warm air rising and escaping from it. The greenhouse gases, water vapor, nitrous oxide, carbon dioxide, methane, ozone, and some other factors make the atmosphere trap more radiation than normal, and it makes the earth warmer than it really should. Over the past fifty years, the production of carbon dioxide, nitrous oxide, and methane increased very sharply. Also, a new type of chemical, chlorofluorocarbon (CFC) was introduced as a refigerant, but it is a very strong greenhouse gas because it can trap a lot of radiation (one molecule of CFC is 12000-16000 times as effective at absorbing radiation as a carbon dioxide molecule). Carbon dioxide is still the major reason for the warming of the earth. Most of it comes from burning fossil fuels (which is also a cause of acid rain) and also from animals and humas. The carbon dioxide can be converted back into oxygen by plants, but deforestation is reducing the earth's capability of absorbing the carbon dioxide. Nitrous oxide is released into the atmosphere by the fertilizer's use in growing crops. The extra methane came from coal mining. One-fifth of the methane generated by human activity cane from a microbial decay of organic material in flooded ice fields.
             The greenhouse effect causes huge trouble by raising the temperatre of the earth. The actual rise of the temperature is not very much, but the earth's ecosystem is bery fragile and these small temperature changes can and wi...