One of darwin's principles is that minor variations in all traits exist within species. why is this idea important to his theory of evolution?

What happens during interphase? (1)the nucleus grows to its full size. (2)the cell grows to its full size. (3)the nucleus divides into two nuclei. (4)the cell divides into two cells.

The nursing instructor has been observing nursing students initiate an iv infusion. which action(s), if made by the nursing student, indicates that further instruction is needed? (select all that apply.) the nursing student:

What substance acts to prevent sudden ph changes in bodily fluids?