Relevant Competitive Tests:
The thermosphere extends from an altitude of ________ to the base of ________ at ________?
A. 75 km, Mesosphere, 670 km
B. 80 km, Ionosphere, 680 km
C. 85 km, Exosphere, 690 kmCorrect Answer
D. 90 km, Ozone Layer , 690 km
Correct Option: C. 85 km, Exosphere, 690 km
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