The word Atmosphere refers to the layer of gases that surrounds the Earth. These gases are retained by the Earth's gravity.

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Meteorology is the science, a branch of Geography, that studies the pehnomena occurring in the atmosphere. They are called meteorological phenomena.

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Meteorological phenomena give rise to Weather and Climate.

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While weather is the state of the atmosphere on a place at an specific moment. Climate is the average state of the atmosphere on a place during a long period of time, the weather patters over more than 30 years.