What is the source of materials for volcanoes that erupt in both ways? how do you know? (10 points)

Why is excretion necessary to maintain homeostasis?

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

Name the glands associated with human digestive system