There are several ways:
oxygen
Oxygen o2
most animals need food, water, and oxygen
Every living thing needs oxygen.
Oxygen and Sunlight.
no i dont think so they make oxygen so i dont think they need it
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
Plants do not need oxygen (in the same way humans, for example, do) as they use carbon dioxide to form sugars for food.