Question

Why Oxygen is necessary for life

Answer 1

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.

Oxygen is essential for respiration because the body uses it to 'burn' food molecules. Animals take in oxygen when inhaling and give off carbon dioxide when exhaling. ... This is why rescue breathing works - it can supply a non breathing patient with enough oxygen to support life.

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Answer 2

$\bf\underline\red{ANSWER}$

Oxygen is essential for respiration because the body uses it to 'burn' food molecules. Animals take in oxygen when inhaling and give off carbon dioxide when exhaling. ... This is why rescue breathing works - it can supply a non breathing patient with enough oxygen to support life.

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