What does it mean when somebody says nobody is there for them and you reasure them and now whenever you see them its like they don't know you or like you or how do you ask what's going on

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.

Dark clothing enables sweat to be evaporated on the skin's surface very quickly. loose light tight

Calculate alex’s tee. alex has a bmr of 1,300 calories and he exercises lightly. his tee is .