Plants play a crucial role in the carbon cycle because they A. Have special bacteria to live in their roots system
B. Allow carbon to enter an ecosystem through photosynthesis

Number and variety of living organisms includes genetic, species, and ecological types

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.

Disaccharides include what sugar molecules. true or false?