Consider each event below and determine if the recovery process for the environment will happen by primary succession or secondary succession.
a. Melting, receding glaciers.
B. Logging a wooded area.
C. Major flooding of a creek bed.
d. Volcanic eruption with lava flow.

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.