Question

What is the main function of the circulatory system in multicellular organisms?

A.
to bring oxygen into the lung

B.
to put carbon dioxide into all blood vessels

C.
to expel waste products from the body

D.
to transport materials throughout the body

Answer 1

help

Answer 2

please

Answer 3

D to transport materials throughout the body

Answer 4

thanks

Answer 5

sorry for a late medal

Answer 6

You are welcome

Answer 7

and thanks for the medal