To be clear MOST cells have identical dna(sex cells don’t have identical) but they do have identical cells because of what during the cell cycle(interphase-s phase) duplicates the dna
Help ease people through the withdrawal process.
Aldosterone from the adrenal gland is the answer
Yes I suppose they must. if the ground and crops all froze we wouldn't have food and if there was no more air we could not breathe and if there was no more sun we would freeze and if there was no more water we would die.