Why does the universe make humanity on Earth vulnerable?

In recent decades, astronauts have been shuttling back and forth between the universe and the earth, and found that there is a big difference between the universe and the earth, and after people enter space, the body will easily react in all aspectsAfter returning to the earth, the quality of all aspects of the body has also decreased a lot, so scientists are also constantly studying why the universe makes human beings on the earth vulnerable. Studies have found that because space is a vacuum, people will lose gravity in the universe, and there are microorganisms unknown to humans in space, which will cause harm to the human body, thus making the human body vulnerable.

Under the condition of weightlessness, the human body will suffer from pulling, so the height of the person will change, but this will also cause harm to the bones of the human body, resulting in a much reduction in the density of the bones of the human body, and in this case, after returning to the earth, it will be easy to produce fractures, and in the past history, astronauts from other countries have also been infected with unknown microorganisms in space, resulting in the death of the human body, and for astronauts in space, These are the causes of their physical vulnerability.

In addition to the universe, people will also be infected by microorganisms on the earth, causing the physical fitness of the human body to become fragile, for example, after the human body is infected by the virus, it is just a small cold, these phenomena, and the worst is death, so even where human beings live, there are many substances that make people's physical fitness fragile, not to mention the unknown space of the universe, even if human beings are exploring the universe more and more deeply, but there are still many unknown human beings. These can cause harm to astronauts.

Moreover, there is gravity on the earth, and gravity can maintain the balance of nutrients in all aspects of the human body for the human body, but because there is no gravity in space, it is difficult for people to control the movement of their bodies when they are in the universe, and the balance of matter in their bodies will also be affected last year, resulting in the fragility of the human body.

The universe is very big, the earth is also very small, it is easy to be hit, human beings are just very small life forms in the universe, it is not the universe that makes human beings fragile.

The main reason for this is that there is no air in the universe, and human beings in the universe are completely weightless. In addition, some microorganisms in the universe may have a certain impact on the human body, so the human body becomes fragile.

1. Air pollution.

Sulfur dioxide in our country.

It ranks first in the world in terms of emissions. Air pollution is currently the number one environmental problem in China.

2. Water environment pollution.

The pollution degree of the seven major water systems in China is in order: Liaohe River.

Haihe River, Huai River.

Yellow River, Songhua River.

In the Pearl River and the Yangtze River, 42% of the water quality exceeds the Class 3 standard (cannot be used as a source of drinking water), and 36% of the urban river sections in the country are inferior to Class 5 water quality and have lost their use function. The water quality of large freshwater lakes (reservoirs) and urban lakes is generally poor, and more than 75% of the lakes have increased eutrophication, mainly caused by nitrogen and phosphorus pollution.

3. Garbage disposal problems.

At present, the comprehensive utilization rate of industrial solid waste in China is about 46%. Less than 10% of the country's municipal solid waste meets the requirements for harmless treatment. White contamination from plastic packaging and agricultural films.

It has spread throughout the country.

What we can do to protect the environment is as follows:

1. Save water and close the faucet to prevent dripping.

2. Use detergents with caution and use soap as much as possible. Reduce water contamination by chemicals in detergents.

3. Try to use as few disposable items as possible. Use durable goods, reduce white pollution, and bring your own shopping bag or basket.

4. Do not litter waste batteries, waste plastics and other garbage; Waste sorting and putting waste into treasure and recycling.

5. Do not hunt and use rare animals.

and protected animals. Afforestation, take care of every inch of flowers and trees.