Answer:
The correct option is B. Evaporation by water.
Explanation:
Evaporation is a process by which the transformation of water occurs in a liquid state to a gaseous state and travels from the earth s surface to the atmosphere.
In a liquid, the molecules move constantly and at the same time are joined together by attractive forces and the molecules collide with each other. Heating increases the agitation of the molecules. Each time they stir more and some escape out of the liquid and end up in the atmosphere. Some liquids evaporate faster than others at the same temperature. This is because the forces that hold the molecules together in the liquid are smaller.
The evaporation of water is important and indispensable in life, since the water vapor, when condensed becomes clouds and returns in the form of rain, snow, fog or dew.
Several studies have shown that oceans, seas, lakes and rivers provide about 90 % of moisture to the atmosphere via evaporation, the remaining 10 % comes from the transpiration of plants.
