Taxonomy seeks to organize all living things in a logical manner.
The pH scale is from 1-14 and if the water is on 7, it would make it a neutral substance (C).
The spinal cord is the primary means for transmitting messages between the brain and the rest of the body.
The nervous system is the major controlling, regulatory, and communicating system in the body. It is the center of all mental activity including thought, learning, and memory. Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis.
Answer should be A system