By which percentage do nonsmokers who are exposed to secondhand smoke at home or at work increase their risk of developing heart disease?

10 to 15

20 to 25

25 to 30

45 to 50

Someone with my pe hw i need it for tomorrow

Check all that occur during ventricular systole. a. the av valves open to allow blood to enter the ventricles from the atria. b. the av valves open to allow blood to enter the ventricles from the atria. c. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. d. the semilunar valves remain closed throughout systole to prevent backflow of blood into the ventricles. e. the semilunar valves open to allow blood to flow into the large arteries. f. the semilunar valves open to allow blood to flow into the large arteries. g. the av valves close to prevent backflow of blood into the atria.

Li believes in using traditional remedies. she firmly believes that if she balances her and she will stay healthy.