*/*_Consider the following statements:1. Nearly 99 percent of the tota – McqOptions

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1.	/_Consider the following statements:1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's surface.2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth's surface.Which of the statements given above is/are correct??
A.	1only
B.	2 only
C.	Both 1 and 2
D.	Neither 1 nor 2
Answer» B. 2 only

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