Using your knowledge of the skeletal system, describe how the adaptation of the mammalian forelimb has allowed mammals to colonize the earth, sea and air

What are some characteristics of a free enterprise economy?

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.

Which fossil organism in whale evolution do you think was the first to live mostly in water? explain your claim with evidence and reasoning?