Oxygen, liquid water, and life is on planet earth
i think the answer is because the cell membrane acts as a protecter for cells. It also moves liquds and since it does move liquids it wouldn't desolve from it.
They both have magnitude.
The difference is that velocity has direction. You have to specify which way you are going with velocity. Speed is without direction. It only has an amount associated with it.
The answer is A, remember that the producer is the origin of the energy and the arrows go from the energy to the being consuming it
The answer is the genotype