Question

Oxygen gas is esential for living beings why​

Answer 1

to turn food into energy

your brain need a lot of oxygen

play an important role in your immune system

Answer 2

Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. We humans, along with many other creatures, need oxygen in the air we breathe to stay alive. Oxygen is generated during photosynthesis by plants and many types of microbes.