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Question

Identify the correct decreasing order of the following with respect to altitude from atmosphere.
I) Troposphere
II) Mesosphere
III) Thermosphere

A
II>III>I
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B
III>II>I
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C
I>II>III
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D
I>III>II
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Solution

The correct option is B III>II>I
From highest to lowest, the five main layers are :

1) Exosphere: 700 to 10,000 km (440 to 6,200 miles)

2) Thermosphere: 80 to 700 km (50 to 440 miles)

3) Mesosphere: 50 to 80 km (31 to 50 miles)

4) Stratosphere: 12 to 50 km (7 to 31 miles)

5) Troposphere: 0 to 12 km (0 to 7 miles)

Therefore, the order is: III>II>I.

Therefore, correct option is B.



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