Communism did take over I believe
I'd say D, as we don't affect the earth as we get more of it.
Explanation: The standard unit of velocity is metre per second. Velocity can be defined as the displacement of a body per unit time.
<span>I think the correct answer from the choices listed above is option B. It is the atmosphere and the hydrosphere the two parts of the Earth system that a climatologist is involved. Hydrosphere is the oceans and other water bodies. While, the atmosphere plays a major role in the cycle of water here on Earth. So, the two goes together.</span>