Earth's atmosphere is the skin of the Earth which is composed of various gases. The atmosphere has several layers. It extends up to about 800 km. Most of the gases are within 100 km from Earth's surface. The weather of earth depends on the activity of this region.
The sun ray creates different temperature in atmosphere, which creates different air pressure. Difference in air pressure creates hot and cold air. When two airs collides, hot air rises while cold air sinks. Battle takes place between two types of air to even the air pressure. That creates intense weather condition in earth.
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