What is the difference between a point source and a nonpoint source of water pollution? a a nonpoint source is easily identifiable. b point sources tend to be agricultural. c point sources can be targeted for reduction. d nonpoint sources tend to be factory outputs. e nonpoint sources are less harmful to the environment?

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.