what cannot surive without oxygen
basic building blocks of life Microscopic organisms an area swollen with pus incapable of regurgitation hydrogen vacuum outer space the respiratory system
A B C D E F G H
Cells are the basic building blocks of life.
the basic building blocks of life cannot survive without oxygen
what cannot surive without oxygen (A) basic building blocks of life (B) Microscopic organisms (C) an area swollen with pus (D) incapable of regurgitation (E) hydrogen (F) vacuum (G) outer space (H) the respiratory system