Why does dna copy itself during the cell cycle? a. to share proteins b. so each daughter cells has the same dna c. to make more cells d. so the cell will not have mutations and develop cancer?

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Which of the following is likely not involved in this example of ecological succession? a) the rotting remains of plants add to the fertility of the soil. b)the soil becomes so fertile that eel grass is replaced by other plant species. c) the roots from plants stabilize the sediment, keeping it in place. d) the concentration of salt becomes so high that all plant life is destroyed.

How do ratio scale and diagrammatic scale work