According to geographical analysis, the volume of groundwater that flows over a given time per unit area through a body of rock or sediment is called the "<u>hydraulic head</u>."
This is because the hydraulic head is based upon the gradient of the water table, including the permeability of the rock or sediment and groundwater thickness.
Hydraulic head is calculated in the form of liquid surface elevation.
Hydraulic head is usually expressed in units of length.
Hence, in this case, it is concluded that the correct answer is "<u>hydraulic head</u>."
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Answer:
Carbonate sedimentary rocks
Explanation:
Carbonate sedimentary rocks are the rocks that are primarily comprised of carbonate minerals such as calcite or aragonite. They are formed chemically. These rocks are formed when Carbon is initially trapped with the accumulation of sediments over it in association with fossil shells. They are also formed due to the dissolution or precipitation by groundwater, depending upon the temperature, pH and dissolved ions present in the solution.
They are often marked by the presence of karst topography and caves.
Some examples of these rocks are limestone and dolomite.
The Black Earth Region or the Central Chernozem Region in Russia takes its name from the type of soil that exists there which is considered "black earth" or "chernozem." This type of soil is very fertile and has made this region an agricultural center in Russia.
the A. because the sin is moving around the moon
This are some of the things behind imperialism in Africa.
1) Need for resources,
2) Political competition
3) Technological advances
Economic factors were more of a driving force behind imperialism because the imperialists were in need for natural resources for them to improve their technology and their national pride.