Answer:
The nervous system transmits signals between the brain and the rest of the body, including internal organs. In this way, the nervous system's activity controls the ability to move, breathe, see, think, and more. The basic unit of the nervous system is a nerve cell, or neuron.
Explanation:
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C because you have to have genetic material .
This seems rather vague, the question is most likely referring to parasitic relationships.<span />
Directions as in North, South, East, and west
