Starch, cellulose, and glycogen
There are some environmental factors of which organisms
respond to in order to maintain balance in its course of life, the factors or
stimuli that they respond to are the following, weather, temperature, air,
water and other organisms living in the area or other areas.
Atmospheric Fixation. The enormous energy of lightningbreaks nitrogen molecules and enables their atoms to combine with oxygen in the air forming huge nitrogen oxides. These dissolve in rain, forming nitrates, that are carried to the earth.
Yes, mitosis does indeed stop. There is a limited amount of times that cells can divide. For example, muscle and nerve cells. In fact, nerve cells stop at about the time we are born.
A substance that speeds up the rate of a chemical reaction is called a Catalyst.