Which of these statements expresses a scientific theory? O A. Any cell that contains a nucleus is usually larger than any cell
without a nucleus
O B. A material that consists of one or more cells is a living organism.
O c. All living organisms have a body that consists of one or more
cells.
O D. A study of material found on a beach showed the presence of
cells.

Which factor that affects biodiversity?

Some substances but not other can cross the (blank) membrane of a cell

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.