<span>It has the advantage that only when the substrate is presence the genes responsible for its metabolism are turned on.</span>
Answer:
Adaptation is process which runs parallel to an evolution
Plants produce oxygen this oxygen gas which is important part of our air is gas that plants and animals must have in order to stay alive when people breeze it's the auction that we take out of the air into our cells and blood is there taking into the alveoli and this is where gas exchange takes place all the o2 available for living organisms come from plants
Amoeba, paramecia, and euglenas
