If i want to have a "six-pack" abs look, what is the best exercise to do?

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.

Which materials are part of a person’s body composition? select three options.1. fat2. supplements3. water4. protein5. medication

If you use a passenger car of more than 26,001 pounds to operate as a transport vehicle for school children, you do not need a commercial license. you only need a class c license to operate a passenger car. true false