The 99% mass of earth atmosphere is confines to the height of:

A. 16 Km from the Earth’s surface

B. 32 Km from the Earth’s surface

C. 64 Km from the Earth’s surface

D. 72 Km from the Earth’s surface

Answer: Option B

Solution(By Examveda Team)

Although our atmosphere extends upward for many hundreds of kilometers, 99% of the atmosphere's mass is confined within a 30 km of the earth's surface.