This method of treating water kills microbes and removes other contaminates such as heavy metals. a. boiling. b. distillation. c. chlorination

Are needed by the body in large amounts in order to maintain good health

What are hormones? a. they are minerals needed for proper bone formation. b. they are the parts of the body targeted by endocrine glands. c. they are substances needed for muscle and nerve activity. d. they are substances released by endocrine glands.

Whic disease reduces bone density and causes the bones to become brittle