What do animals require for survival?
food glycogen Lithium water sugar Helium Aluminum Oxygen
A B C D E F G H
Oxygen Oxygen is in the air we breathe.
an animal requires oxygen for survival
What do animals require for survival? (A) food (B) glycogen (C) Lithium (D) water (E) sugar (F) Helium (G) Aluminum (H) Oxygen