If the oxygen content in the earth's atmosphere increases to 90%, what will happen to the earth?

Nowadays, people often discuss the harm of the greenhouse effect, which is caused by the gradual increase in the amount of carbon dioxide in the earth's atmosphere. However, many people don't think about the effect if the amount of oxygen in the air becomes very large.

It needs to be clear that although most animals rely on the reaction of oxygen to provide energy for blood circulation, the more oxygen in the air, the better. The current oxygen content on the earth's surface is 21%. When the oxygen content reaches 90%, the following forms will occur.

Forests are important producers of oxygen

Most animals, including humans, are biologically intoxicated by oxygen

We know that if we travel to Tibet from the eastern seaboard, we will have a headache, shortness of breath and rapid heartbeat when we get off the plane or train. This is due to the high altitude of the earth in Tibet, the air is thin, and the oxygen content is low. If the amount of oxygen on the earth slowly increases, the phenomenon of "oxygen drunkenness" will occur.

After being intoxicated with oxygen, it is not happiness, but symptoms such as tiredness, lethargy, chest tightness and dizziness. This is the reverse mechanism of the process of human oxygen inhalation from "deficient" to "rich". It can be said that good things can also bring bad effects, and there are similar situations in daily life. This is still a process of slowly increasing oxygen. If the oxygen content reaches 90%, human beings will soon be unable to survive until extinction.

High altitudes are prone to altitude sickness

Causes biological aging and accelerated aging of objects

Some beauty-loving ladies usually buy some skin care products to maintain their face, hoping to stay youthful forever. One of the important reasons for the aging of the human face is that the active components of the facial cells are gradually oxidized and their regeneration ability becomes poor. The increase in oxygen content will undoubtedly increase the intensity of oxidation. In addition to humans, it will be difficult to purify some other metal materials with more active outermost electrons, and it is difficult to appear pure such metals in nature, because they are surrounded by oxygen almost all the time.

Fires are frequent and can get out of hand

The incidence of fire caused by an oxygen-rich environment will increase exponentially, especially for virgin forests, not to mention a cigarette butt, the sun may cause dry branches to burn. With global fires, the oxygen in the air will be significantly reduced, and the carbon dioxide content will be significantly higher.

forest fires occur

Back to the Age of Giants

Scientists have studied the air bubbles in a piece of amber 300 million years ago and found that the oxygen content of the earth reached 35% during the Carboniferous period 300 million years ago. There are about 3 meters! Due to the increase in the amount of oxygen, the respiration efficiency of insects will also increase, and insects can adapt to the oxygen-rich environment.

Amber truly records the world hundreds of millions of years ago

the demise of plants

When oxygen increases to a certain level, the composition of carbon dioxide in the air will become less and less. Plants use carbon dioxide for photosynthesis to grow. If the carbon dioxide content continues to decrease, there will be fewer and fewer raw materials for plant photosynthesis. Over time, plants will either start to choose new raw materials for photosynthesis, or they will gradually die out. .