The answer would be the 4th option. (Rainwater soaking into the ground). Soil erosion is commonly caused by rainwater soaking into the ground.
Answer: Most of the world's volcanoes are found around the edges of tectonic plates, both on land and in the oceans. On land, volcanoes form when one tectonic plate moves under another. Usually a thin, heavy oceanic plate subducts, or moves under, a thicker continental plate.
Answer: The Cold War shaped American foreign policy and political ideology, impacted the domestic economy and the presidency, and affected the personal lives of Americans creating a climate of expected conformity and normalcy. By the end of the 1950's, dissent slowly increased reaching a climax by the late 1960's.
Explanation:
It is absolutely true that China is seeking to lessen its dependence on coal by developing more hydro power resources. The correct option among all the options given in the question is the first option. China is blessed with natural rivers and it is slowly trying to reduce its dependence on coal powered plants to hydro power plants. This is also a great step towards reducing air pollution.