The correct answer is :
From the cross section of the Grand Canyon, present is the Uplift, erosion deposition and tilting of the Precambrian sedimentary and igneous rocks.
The Precambrian metamorphic rocks and granite are the oldest rocks or structures.
Human activities affect the operation of physical environment processes, and the results rebound on the human world. ... The physical environment provides resources and a platform to use those resources, but can also be a hazard to people. Therefore human impact as a subject is of special concern to physical geographers.
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Erosion is the process by which the surface of the Earth gets worn down. Erosion can be caused by natural elements such as wind and glacial ice. But anyone who has ever seen a picture of the Grand Canyon knows that nothing beats the slow steady movement of water when it comes to changing the Earth.
The loss of top soil in very dry areas of the world is known as desertification. The correct option among all the options given in the question is option "B".<span>Desertification is
the phenomenon in which land degradation of a very dry region increases and the
water bodies typically dries up. This also results in not only loss of
vegetation but also animal life. This phenomenon can be caused not only due to
climate changes, but also due to human activities.</span>
