What Happens If the level of oxygen in the Earth Overrated?

You must be imagine how it feels when the supply of oxygen depleted or disappear completely, which would culminate in the death of living organisms at the destruction of the earth.
But have you ever thought what it would be if oxygen levels overrated? Curious? this is going to happen.
1. Oxygen Increases the Risk of Fire

In other words, if the oxygen concentration increases, the potential fire risk also increases.
For example, when you light up a cigarette while driving, of course coal will be much brighter and more quickly burn.
2. Oxygen Poisoning/Toxity

Oxygen, a gas which is a vital element for human life, it also can be toxic to humans. Oxygen can poison us (called oxygen poisoning), if the oxygen pressure higher than 1 bar (normal pressure) or if the oxygen levels is higher than 21%.
Excess oxygen conditions generally occur in people who use breathing apparatus with oxygen cylinders, such as deep-sea divers, confined space worker. Oxygen toxicity in humans bring bad effect on the three vital organs, like the lungs, nervous system, eyes, etc.
3. Increased Metabolism Process

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