Function of circulatory system

Frankie is having difficulty developing a friendship with histeammate curtis. whenever frankie invites curtis to hangout with him at the park, curtis always says that he's busy.what is most likely preventing a healthy relationship fromforming? a)the boys are not being generous with their time andeffort.b)the boys are not communicating.c)both boys are too busy.d)the boys are on different teams.

Stuart runs with his brother each morning, and they can only speak one or two words at a time between multiple deep breaths. which best describes their heart rates during this activity? low moderate vigorous dangerous

Muscles of the body for seventh grade