The term in question is referred to as osmoregulation.
Since water and its soluted metabolites are key to the survival and normal function of the cell, there are many membrane proteins that regulate the exchange of water, ions and other osmolites between the cell and its surroundings.
Well it happens every six months, one in summer in June and winter December. And if i'm wrong then i understand :) <span />
It would be scattered throughout the wave because there would be different vibrations causing it to move in different places.
All living things need energy;it is requirement for life. In a a typical cell ATP, the hogh energy, is produced in the mitochondria in the presence of sugar(glucose and oxygen
D.three tissue layers I think
