What did Gregor Mendel use to discover the principles that rule heredity? A. Pigeons

B. Pear Trees

C. Dogs

D. Pea Plants

What kind of action is a cause of air pollution

What is the next step in the process after a substrate enters the active site of an enzyme

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.