1. The age of the atmosphere is about 600 million years. |
2. The composition of the atmospheric gases is constant. |
3. The gases of the homosphere are evenly mixed |
4. The heterosphere lies 80 km above the sea level. |
A) 1, 2 and 3 are correct
B) 1, 2 and 4 are correct
C) 1, 3 are 4 are correct
D) 1, 2, 3 and 4 are correct
Correct Answer: C
Solution :
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