Wind speeds increase higher up from the Earth's surface because
A. the atmosphere is composed of heavier molecules at lower atmospheric levels.
B. the wind is augmented by the solar wind.
C. friction from landscape features doesn't slow them down.
D. oxygen levels are decreased, making air movement quicker.

Respuesta :

The correct answer for the question that is being presented above is this one: "A. the atmosphere is composed of heavier molecules at lower atmospheric levels." Wind speeds increase higher up from the Earth's surface because the atmosphere is composed of heavier molecules at lower atmospheric levels. 

C. friction from landscape features doesn't slow them down.