Globle Warming

Topics: Carbon dioxide, Global warming, Greenhouse gas Pages: 3 (927 words) Published: October 16, 2011
Everyone agrees that our planet is getting warmer. It has been shown that Earth's average surface temperature has increased 0.6C (33.8F) over the last 100 years. Greenhouse gases help keep the planet within habitable temperatures. Because the moon does not have greenhouse gases. Earth's greenhouse gas is made up of several components. Water vapor, carbon dioxide, and ozone are the dominant stabilizing greenhouse gases. Levels of carbon dioxide, methane, and nitrous oxide have increased substantially over the last century. Carbon dioxide is the most important of these three, and it is higher than it has ever been over the last 650,000 years. More carbon dioxide in the atmosphere leads to an increase in temperature. Everybody agrees with this.

Global Warming is caused by many things. The causes are split up into two groups, man-made or anthropogenic causes, and natural causes.

Natural causes are causes created by nature. One natural cause is a release of methane gas from arctic tundra and wetlands. Methane is a greenhouse gas. A greenhouse gas is a gas that traps heat in the earth's atmosphere. Another natural cause is that the earth goes through a cycle of climate change. This climate change usually lasts about 40,000 years.

Man-made causes probably do the most damage. There are many man-made causes. Pollution is one of the biggest man-made problems. Pollution comes in many shapes and sizes. Burning fossil fuels is one thing that causes pollution. Fossil fuels are fuels made of organic matter such as coal, or oil. When fossil fuels are burned they give off a green house gas called CO2. Also mining coal and oil allows methane to escape. How does it escape? Methane is naturally in the ground. When coal or oil is mined you have to dig up the earth a little. When you dig up the fossil fuels you dig up the methane as well.

Another major man-made cause of Global Warming is population. More people means more food, and more methods of transportation, right?...
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