There are several ways:
Oxygen. It supports combustion.
Oxygen o2
oxygen
most animals need food, water, and oxygen
no i dont think so they make oxygen so i dont think they need it
Every living thing needs oxygen.
Oxygen and Sunlight.
yes because its a living thing and need oxygen in order to live .
You need oxygen, food, nutrients and water to stay alive.
h2o
OXYGEN
oxygen