My project is "write a 200 word letter that could be placed in a time capsule to be read 100 years from now. in your letter, advise students your age about three things they need to do to keep themselves, their families and their communities healthy."

can someone suggest some topics to put in the letter? id be most grateful.

Which of the follow is good way to gauge musculature endurance?

How does social isolation affect teens?

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.