Answers

2015-06-19T19:44:07+05:30
First is troposphere then stratosphere then mesosphere then ionosphere then thermosphere then exosphere
 
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2015-06-20T22:23:13+05:30
1>Troposphere. (lowest) 
2>Stratosphere .
3>Mesosphere.
4>Thermosphere ( contains electrically charged ions hence giving rise to another layer called ionosphere , but it is mostly not taken into account)
5>Exosphere (highest).
Picture:
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