A demarc is where one network ends and another begins. Demarc stands for demarcation point. It is the physical point at which the public network of a telecommunications company ends and the private network of a customer begins.
However, the distinction between where one category of network begins and another ends is sometimes blurry.
Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms.
The answer is choice B.
Nondisjunction happens when the chromosomes don't separate correctly during meiosis, which can result in an extra copy of certain chromosome.
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Cell division is important for many processes such as growth, the healing of wounds, cell repair and reproduction, etc., Not only is cell division play an important role for humans but even for parasites like paramecium. Paramecium use it as a source of reproduction, this action is called binary fission.
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