Groundwater is defined as water that is found beneath the surface of the earth in conditions of 100 percent saturation (if is less than 100 percent saturation,then the water is considered soil moisture).Ninety-eight percent of earth’s available fresh water is groundwater
Answer:
genetics;the study of heredity and the variation of inherited characteristics.
evolution;evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection
variation;a change or difference in condition, amount, or level, typically with certain limits
Explanation:
400x
Is the answer to this question.
The atmosphere is divided into different regions, called layers. The layer closest to the surface is known as troposphere, after which comes the stratosphere. The stratosphere begins at an altitude of 10 miles above the surface of the earth and stretches up to 31 miles above the surface of the earth. It is the second layer of the atmosphere (beginning from the surface of the earth) and it is the region which contains ozone, which plays a vital role in stopping ultraviolet radiation from reaching the earth's surface.
