Good morning to my respected teachers. I am Prasanth of 10th class. Now I am going to tell about the Global Warming. Firstly we have to know about the meaning of Global warming. Global Warming means increase in temperature all over the world. This increase in temperature is due to the increase in percentage of green house gases like Carbon dioxide, Methane, Carbon monoxide, Water vapour etc. Now let us know about the green house effect. A green house is a small house made of glass that is used to grow plants. It traps the Sun rays and keeps the heat from escaping. It is warm inside. This is called green house effect in general. In the same way that the glass traps heat in a green house, some green house gases present in the atmosphere as mentioned earlier, trap heat from radiating back to the space. The natural green house gases act like a big blanket around the earth, keeping it warm. This is called green house effect. Global Warming is caused by the green house effect.
Causes of Global warming:
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:
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. 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:
Man-made causes probably do the most damage. There are many man-made causes. Pollution is one of the biggest man-made problems. 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. Methane is naturally in the ground. When you dig up the fossil fuels you dig up the methane as well.
Another source of methane is...