The nervous system consists of things like the spinal cord, brain, and all the nerves that connect the sensory organs. Basically, the nervous system helps different parts of the body communicate with each other; thus leading to control of the body.
NaCl is dissolved in water so that in a given region or volume the concentration is initially higher in one part than the other l, thus simple diffusion will occur so that there is a net difference or 0, with respect to the concentration of NaCl in a particular volume of water than another. Basically the NaCl will be distributed throughout volume of water.
Scientific study of life( its structure,processes,etc)
A hypotonic solution<em /> would cause the bacterial cell to lyse or burst. This happens via osmosis. When the concentration of solutes is higher inside the cell, water will move towards that higher concentration because it tries to balance things out. When a lot of water gets into the cell and it can no longer handle it anymore, it will burst or lyse.