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

hi! welcome to Openstudy!!:D as u r new to this site i would suggest u to go through the code of conduct once!! http://openstudy.com/code-of-conduct
happy studying:D
now moving to ur ques...i believe it should be D...

Answer 2

the answer

Answer 3

fast

Answer 4

A.

Answer 5

D or A

Answer 6

its D.