what cannot survive without oxygen?
animals tanks an organism's body living things hydrogen space Veins and arteries. mammals
A B C D E F G H
Cells are the units of function in living things.
living things cannot survive without oxygen
what cannot survive without oxygen? (A) animals (B) tanks (C) an organism's body (D) living things (E) hydrogen (F) space (G) Veins and arteries. (H) mammals