The physical process that tend to change earth geological area and composition would be the plate tectonics.
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Cancer is basically a disease of uncontrolled cell division.
The answer is that it gives them shelter
The correct answer is multiple sclerosis.
The MS or multiple sclerosis refers to a demyelinating disorder in which the insulating envelopes of the nervous tissues in the spinal cord and the brain get destructed.
This destruction disturbs the tendency of the components of the nervous system to interact, leading to an array of symptoms and signs, involving mental, physical, and on certain occasions psychiatric issues.