What would happen if our atmosphere consisted of pure oxygen?
Answer (3)
If the atmosphere was 100% Oxygen, this could cause even the slightest spark of a flame, this could cause the world to turn into a ball of flames. Oxygen is extremely flammable, meaning that everything could set on fire.
The presence of pure oxygen in the atmosphere would cause damage to the delicate tissue and blood vessels that make up the lungs, which is why it is good that nitrogen makes up the majority of the atmosphere.
Plants and cyanobacteria would probably not exist on land or in the ocean as we know them today because they need **carbon dioxide **to live (oxygen being a by-product of their metabolism).
The insects and animals that rely on them would probably also be non-existent if our **atmosphere **were 100% oxygen.
Oxygen radicals cause damage to fats, proteins, and DNA in the body. When pure oxygen is inhaled, it triggers a cascade of chemical reactions . As a result, some of that oxygen becomes a dangerous, unstable cousin of oxygen called a "radical".
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An atmosphere of pure oxygen would cause severe health issues, extinguish many life forms depending on carbon dioxide, and increase combustion risks, leading to uncontrollable fires. The delicate balance of gases that supports life would be destroyed, with oxidative stress harming cellular functions in living organisms. This demonstrates the critical importance of both oxygen and nitrogen in maintaining Earth's biosphere.
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