1.

The atmosphere becomes thinner with increasing altitude. With no definite boundary between the atmosphere and the outer space, Karman Line is often used as a border, with a distance of

A. 100 KM from earth
B. ​10 KM from earth
C. 5100 KM from earth
D. ​1000 KM from earth
Answer» B. ​10 KM from earth


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