Subject :GENERAL Class : Class 2
Subject :GENERAL Class : Class 5
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Class : Class 6
Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.
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Subject :GENERAL Class : Class 5
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Subject :IGK Class : Class 5
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Subject :IGK Class : Class 4
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Subject :IGK Class : Class 2
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Subject :GENERAL Class : Class 5
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Subject :GENERAL Class : Class 5
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Subject :GENERAL Class : Class 8
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Class : Class 8
The Davis Cup is the premier international team event in men's tennis. It is run by the International Tennis Federation and is contested annually between teams from competing countries in a knock-out format.
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Subject :GENERAL Class : Class 5