Over 99 percent of calcium in the body is found within the a. liver and spleen. b. muscles and skin. c. bones and teeth. d. stomach and small intestine.

Which action is important to a pregnant woman’s health? see a doctor for regular x-rays drink alcohol in small amounts engage in regular physical activity eat a diet rich in seafood

Scientists who study the anatomy of the systems in the human body focus their studies on

Based on the chart, what are the three most effective methods to protect against pregnancy?