Explain three cause and effect relationships between the human activities and the measurable changes in the Earth system represented in the Understanding Global Change model.

The smallest parts of these that retain their original properties are called

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.

As the earth formed, the force of gravity increased due to increased mass. what effect did this increased gravity have on the forming planet?