Which of the following statements describe etiology? check all that apply.

Vertebrates have this type of circulatory system: wut i it owo

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.

Fibers from the medial side of each eye cross over to the opposite side of the brain at the