Only works in a narrow range of internal physical and chemical conditions. Many of the organisms mechanisms serve to maintain internal consistency when external changes are great. Because of metabolic activities, organisms may increase in the number of molecules, and thus grow. If the growth is not regulated then an organism can t achieve its adult shape nor function. Uncontrolled growth like cancer ultimately destroys life.
Reproduction is when organisms replicate themselves with variations in many cases.
It makes the evolution of life which leads to adaptation possible. Charles Darwin and Alfred Russel Wallace proposed first testable theory about adaptation and evolution by natural selection. There are three modes of reproduction. Mitosis is when the cell is divided into two daughter cells. Small portions of their bodies buds off to form new individuals.