What causes the movement of air masses in a front

How are farmers that use no plow farming methods able to improve air quality for the people around the fram

The formation of the planet uranus is estimated to have occurred approximately when?

Which part of a mountain receives the majority of moisture due to the rain shadow effect? a. the leeward side b. the windward side c. the bottom of the mountain d. all parts of the mountain receive equal amounts of moisture.