It should be a. Once fossil fuels are used we can not use them anymore.
Electricity from hydropower composes approximately 6.5 % of the total electricity produced in the United States.
A dam or other construction that alters the natural flow of a river or other body of water is used to generate hydropower, often known as hydroelectric power.
One of the world's first forms of energy, hydropower produces power when moving water spins a turbine or wheel. As far back as ancient Greece, farmers utilized it for mechanical activities like grinding grain. Additionally a renewable energy source, hydropower doesn't emit any hazardous byproducts or pollute the environment. Discover more about the development of hydropower.
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Albedo feedback is a positive feedback climate process where a change in the area of ice caps, glaciers, and sea ice alters the albedo and surface temperature of a planet. ... However, if warm temperatures decrease the ice cover and the area is replaced by water or land the albedo would decrease.
Answer:
B.
I could wrong that because there many theory.
I choose B that because my feelings think B make any sense?