The earth is sick.

The earth was ill and limped in. Saturn, a registered doctor, looked at the earth and asked anxiously, Brother Earth, what's wrong with you? The earth replied, alas! Don't mention it, I'm getting worse every day by the earth people.

The earth came to the ophthalmologist comet. After examining the earth, the comet said, Brother Earth, your children discharged a lot of waste and waste gas on you, which seriously damaged your skin. You are so sick. Let's look elsewhere!

The earth came to the doctor Mars again. Mars listens here and knocks there, saying, Brother Earth, you are running out of oil, coal and fresh water stored in your body. You are weak now!

The earth has turned around the central hospital again, and everywhere it goes, it will find such and such problems.

Finally, the earth went to a big consulting room. After discussion, the experts issued a warning to the earth people: for your own survival, please take care of your mother-the earth!

The earth is sick. Chlorine and bromine produced by component 2 Freon and halon destroy ozone through chemical process in stratosphere, which is the main reason for Antarctic hole breaking. So how did freon and halon enter the stratosphere and cause ozone layer destruction? We know that the molecules of freon and halon released artificially are heavier than air, but they hardly react with any molecules in the lower layer, so they cannot be removed by general atmospheric chemical processes. After a year or two, these substances are evenly distributed in the troposphere all over the world, and then they are brought into the stratosphere by atmospheric circulation mainly over tropical areas, and the wind transports them from high latitudes to low latitudes, where they are evenly mixed. In the stratosphere, intense ultraviolet radiation dissociates freon and halon molecules, releasing highly active chlorine and bromine in atomic state, and generating the main substances that destroy the ozone layer. They destroy the ozone layer in the form of catalysts. It is estimated that a chlorine atom can destroy 104- 105 ozone molecules, and the destructive power of bromine atoms released by halons is 30 ~ 60 times that of chlorine atoms. Moreover, chlorine atoms and bromine atoms have synergistic effect, that is, when they exist at the same time, the ability to destroy ozone is greater than their simple addition.

The formation of Antarctic ozone hole is a three-dimensional complex process including atmospheric chemistry and meteorology, but the fundamental reason is freon and halon produced by human activities on the earth's surface. Freon and halon have a long life in the atmosphere, and it is difficult to remove them once they enter the atmosphere, which means that their damage to the ozone layer will last for a long time.

Freon is a proud product developed by DuPont in 1930s, which is widely used in refrigerants and solvents. Halon plays an important role in fire fighting and other industries, such as plastic foaming agent, aerosol spray and electronic cleaning agent. When scientists' research convincingly reveals that human activities have caused serious depletion of the ozone layer, the action of mending the sky is very rapid.

From here, we can not only see the increasingly urgent pace of mankind, but also find that even if we make such efforts to make up for the ozone hole above our heads, it is difficult to remove ozone-depleting substances in the atmosphere. It is predicted that the concentration of hydrogen atoms in the stratosphere will drop below the critical level around 2050. By then, the ozone hole above us is expected to begin to recover. Ozone layer protection is a typical example of global cooperation in modern history. This cooperation mechanism will become the wealth of mankind and provide reference and experience for solving other major problems.

The earth is sick. The sun is a huge heat body with a surface temperature as high as 6000℃, which is an inexhaustible energy source for the earth. As we all know, the five colors of light that the human eye can see are red, orange, yellow, green, blue and purple, which are solar radiation in the visible range. In fact, sunlight reaching the ground also includes infrared rays and ultraviolet rays. Some ultraviolet rays radiated by the sun are extremely energetic. If it reaches the surface of the earth, it may destroy the protein of biomolecules and genetic materials, namely DNA, leading to cell destruction and death. However, the forces of nature changed this process. The earth's atmosphere is like a filter and an umbrella, which blocks the harmful part of solar radiation from the atmosphere and makes the earth a lovely home for human beings. It is the ozone layer that women and children are familiar with today that has done this work.

As we all know, ozone and oxygen are brothers, but ozone is made up of three oxygen atoms, while oxygen is made up of two oxygen atoms. Due to the balance between ozone and oxygen, a relatively stable ozone layer is formed in the atmosphere, and the height of this ozone layer is about 15~25 kilometers from the ground. The generated ozone has a strong absorption effect on the ultraviolet radiation of the sun, effectively blocking the ultraviolet rays harmful to the surface organisms. Therefore, in fact, it can be said that after the formation of the ozone layer, life on earth exists, continues and develops, and the ozone layer is the umbrella of the surface biological system.

The ozone layer is an extremely fragile gas layer in the atmosphere. If all the ozone in the atmosphere is compressed vertically to one atmosphere at zero, the total thickness of the ozone layer is only about 3 mm ... Scientists have discovered for the first time that the ozone layer in Antarctica has been seriously damaged. Antarctica is a very cold area, covered with ice and snow all year round, surrounded by the ocean. In the past 10 ~ 15 years, the stratospheric ozone over antarctica was rapidly consumed on a large scale every spring. In the center of the ozone layer over the polar regions, nearly 95% of the ozone is destroyed. Looking up from the ground, the ozone layer at high altitude is extremely thin. Compared with the surrounding areas, it looks like a hole with a diameter of Qian Qian meters, hence the name ozone hole. The ozone hole can be described by three-dimensional structure, that is, the area, depth and duration of the ozone hole. During the period from 1987 to 10, the ozone concentration over Antarctica decreased to half of that during the period from 1957 to 1978, and the area of the ozone hole expanded to cover the whole European continent. Since then, the decline of ozone concentration has been accelerating, sometimes even reduced to only 30%, and the area of ozone hole has been expanding. 1994 10 It is observed that ozone holes once spread all over the southernmost part of South America. In recent years, the depth and area of ozone hole are still expanding. 1995 The ozone hole days observed were 77 days. By 1996, almost all ozone in Antarctic stratosphere was destroyed, and the number of days when ozone holes appeared increased to 80 days. Since 1997, scientists have further observed that the time of ozone hole has also advanced. 198 ozone hole lasted more than 100 days, which is the longest record since the discovery of Antarctic ozone hole. The area ratio of ozone hole is about197/0/5%, which is almost equivalent to the area of three Australia. This shows that the consumption of Antarctic ozone hole is deteriorating.

The earth is sick. With human pollution, our earth is sick.

The earth had a serious illness, which caused great earthquakes everywhere and acid rain from time to time!

Grandpa Earth went to the Star Hospital to see a doctor. Dr. Sun said, "Are you here for beauty?" Oh! Grandpa Earth has yellow spots. Grandpa Earth said, "That's a desert." Dr. Sun took out a super magnifying glass. This is a big shock. It turns out that the desert is expanding at a fast speed. At first, dense forests turned into deserts a long time ago. The river stinks and the factory emits waste gas. The environment is polluted. The doctor said, "I can't help you, but the only way is to ask humans not to." My life is in your hands! "

We must protect the environment and build a beautiful home.

The earth is sick. 5 cough, cough, cough. The cough came.

The voice of the earth came from the Cosmic Hospital, and Dr. Jupiter asked, Beauty of the earth, you have already started to register for this year's beauty pageant. How did you get here? You win the title of the first beauty every year, don't you want to win it this year? The earth said lovingly, No! My skin used to be delicate and smooth, but this generation of human descendants littered, flowers were poisoned by them, and clean water was turned into dirty water by them. My heart ached at the thought of this tragedy. Alas, the earth fainted with a loud cry. Dr mercury used an astronomical telescope to see that one country was at war with another. The smoke choked the mercury. Mercury frowned and said to the fainting earth, alas! It's foolish of you not to tell us that human beings hurt you so mercilessly. You are a selfless devotee of human beings, but human beings bring you pain.

After a long time, the earth finally woke up, and Mars came to comfort the earth and said, "Beautiful earth, don't be sad. Humans now know their mistakes, and now they don't hurt you anymore. " . In the streets, you can see' it is everyone's responsibility to protect the earth.' Slogan. June 5 every year is the day when human beings focus on protecting you. They will help you bathe, change clothes and wear garlands, you know? It's true that people are kind to you! The earth said to Mars with tears in her eyes: Thank you for telling me the good news. I don't blame humans for knowing that they are wrong. As the saying goes,' if you know your mistakes, you will change them, and the goodness will be great'. . Although the earth is in a mess now, she is still smiling.

The beauty of the earth, you can't take part in the beauty contest yet, because you are weak and have some problems. Saturn said: 100 years later, I believe you will win the first place.

Dr. Jupiter smiled and said: Earth, 100 years later, you will be the first in the universe, and the title of' Cosmic Beauty' must be yours!