The troposphere extends from the surface of the Earth up to 17 kilometer (different height at different location). The average height of the troposphere is _____ kilometer.
(A) 6
(B) 9
(C) 12
(D) 15
The troposphere extends from the surface of the Earth up to 17 kilometer (different height at different location). The average height of the troposphere is _____ kilometer.
(A) 6
(B) 9
(C) 12
(D) 15
