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The troposphere is the only atmospheric layer that can support life.Yes, the troposphere is where humans most pollute the atmosphere. It's right where we live.Some pollutants called CFC's make it into the stratosphere and break down the ozone layer.
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This spear is also called ozone layer(O3) .when carbon monoxide  released from fossil fuel and also corbon  4m refrigerator coolant .O3 and carbon monoxide mixed that makes the O3
in to O2 and CO2 thus our ozone which reflects most of our sun uv rays back to the space is reduce so tem phenomenon will change in the earth thus makes food production less,water scarcity  and also the rain percentage in region will be affected