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The composition of haze grade four is 500 words

Haze

Looking out of the window, I suddenly found that I couldn't see the blue sky and white clouds. There was a gray scene between the heaven and the earth. Even the opposite building had only a hazy outline. Such weather is more and more frequent, haze is quietly enveloping our city.

Haze is a turbid phenomenon formed by a large number of particles such as smoke and dust suspended in the fog. According to the remote sensing satellite monitoring of the Ministry of environmental protection, 1.3 million square kilometers of China were shrouded in haze on January 29, causing serious air pollution.

How did the haze come about? Many families have cars, our travel is more convenient, but the exhaust emissions of cars pollute the air; power plants, refineries, chemical plants "show their talents" in our city, but constantly emit soot and dust day and night; gorgeous fireworks and firecrackers make people busy, but the air becomes very cloudy, the air quality drops sharply, PM2. 5. The PM10 index has risen sharply, which are the main reasons for haze. They bring us convenience, pleasure and unexpected consequences.

Haze weather, we breathe turbid gas. Haze in the air can cause pneumonia, laryngitis, tracheitis, heart decline and other diseases. In 1952, the invisible killer of the fog in London, England, killed 4000 people in just five days, and 8000 people in the next two months. It can be seen that the power of the fog should also ring an alarm for us.

What we want is fresh air and healthy body. Please don't sacrifice your health for the so-called good life. Less driving, green travel, more trees and forest protection. Haze control starts with me.

2 haze

In the past week, there has been an "abnormal situation" - haze in our city. Haze has seriously affected the lives of residents. When I was at school, it was gray and I couldn't see anything clearly. This Saturday, my father sent me to guzheng class. It was almost there. At that time, I didn't see the tall buildings around me. I thought my father was driving the wrong way!

Generally, fog is the same as pure milk, which is milky white, while haze is gray, and a little choking. I don't know much about fog and haze, so I checked it on the Internet today. Oh, so it is. Fog is an aerosol system composed of a large number of tiny water droplets or ice crystals suspended in the air near the ground. It is the product of condensation of water vapor in the air near the ground. The existence of fog will reduce the transparency of the air and worsen the visibility. If the horizontal visibility of the target object is reduced to less than 1000 meters, the weather phenomenon of water vapor condensation suspended in the air near the ground is called fog.

Haze is also called haze. Dust, sulfuric acid, nitric acid, organic hydrocarbons and other particles in the air make the atmosphere turbid, blurred vision and worsen visibility. With the deterioration of air quality, haze weather phenomenon increased and the harm increased. In recent years, haze weather phenomenon is combined with fog in many areas of China as a disaster weather warning and forecast. Collectively referred to as "haze weather".

Haze can make people "relapse", because haze contains bacteria, dust, viruses and other pollutants, coupled with man-made industrial exhaust, automobile exhaust, etc., which seriously affect people's health. Now, some of the students in our class have a bad cold. They are listless and sick. So we must protect the earth which has been full of holes, protect the environment, from me, let the blue sky and white clouds accompany us forever!

3 haze

Open the window, the world in front of you today is not as clear and real as it used to be, but gray and dark. All the scenery outside seems to be covered with a layer of veil, indistinct, if not, can not see their true colors. "I think this foggy weather is caused by haze!" I said to myself.

In the computer input "haze" two words, click to open the answer, the introduction is such a paragraph: "haze, as the name suggests, is fog and haze. Sulfur dioxide, nitrogen oxides and inhalable particulate matter are the main components of haze, the first two are gaseous pollutants, and the last one is the main culprit of aggravating haze pollution. They combine with fog and make the sky gray for a moment. " Oh, it turns out that the main culprit of "darkness" is PM10! I nodded thoughtfully and continued to look down.

"Long term inhalation of haze can cause serious death in the respiratory tract." Oh, my God! I opened my mouth in front of the computer. I didn't expect that the small haze could cause such great harm and cause death. It's amazing.

Nowadays, because of the aggravation of haze pollution, many newspapers have published the news about haze. For a time, people pay attention to the small haze, and they all begin to find solutions to haze and self-protection. But in peacetime? This haze seems to be rarely mentioned, as if it is very, very far away from us.

I think it's a lesson. Fortunately, the haze can still be controlled. What if it can't be controlled? Don't we live in darkness forever? We should be prepared before the harm comes, improve our living environment, drive less, reduce the exhaust gas from industrial production and so on. We should take precautions to keep ourselves away from harm.

4 haze

Recently, the haze weather is very serious. Originally, we had to run gymnastics every morning from Monday to Friday. Because of the haze weather, the daily running gymnastics was cancelled. In the haze weather, many pedestrians on the street wear masks, fearing that the haze will breathe into their lungs and affect their health. When can China be free from environmental pollution and haze.

It is foolish to develop the economy while damaging the environment. The earth is the home for everyone to live. If the earth's environment is seriously damaged and the ecological balance is broken, then people's home will no longer exist. Haze is also a manifestation of serious environmental pollution. Haze is very harmful to people's health. Many experts say the harm of haze to people is more terrible than SARS. Haze directly damages the human respiratory system, especially the lungs. Secondly, haze can hurt people's heart. Research shows that particulate pollutants in haze weather may cause human myocardial infarction. Again, haze weather hurt people's skin. Skin exposure is the first part to be exposed to haze, and it is also the part to be exposed to haze for the longest time. Therefore, in the haze days should do a good job of skin cleaning. Finally, haze can hurt our brains. When the haze weather, PM2. 5 increase 10 micrograms / cubic meter, the brain function will be aging for three years. This study also gives us a better understanding of the harm of haze to people.

In haze weather, we must take protective measures to reduce outdoor activity time. When going out, try to wear masks that can prevent haze particles. The most fundamental way to solve the haze should be to protect the environment and take good care of the environment. If we continue to damage the environment, the haze will be more serious in the future, and people may not be able to live on the earth. Let's take good care of our home earth!

5 haze

On Thursday morning, I got up as early as before. When I was going to school with my backpack, my father said, "I announce that I will not have class today because of the haze." After listening to this, I asked suspiciously, "really?" Dad took out his mobile phone to show me the SMS, I saw, ah, really, there are school SMS, no class. What is haze? I asked Dad with questions. Dad said, just look out on the balcony. I ran to the balcony, looked out, ah! It's foggy and dark outside. I can't see clearly. You can only see the outline of things closer, but you can't see things farther away. You can't see tall buildings and Zijin Mountain in the distance. At this time, my father also came over, he said: "what you see is haze, let's go out to buy vegetables." I followed my father out of the house, the sky is not as blue as before, the air is not as fresh as before, cars are driving with lights on, birds are flying around, like they can't find their home. The whole sky was covered in a gray cage. Look at people wearing masks, but I didn't have one. After a few breaths, the air really smelled bad. There was a bad smell of smoke. I coughed several times. I think: in the past, people didn't care about the environment. Smoking and car exhaust will pollute the environment. Now the bad air will make people sick, such as cold, fever and cough.

I want to say to those who pollute the air: change all the bad behaviors that pollute the air. In the future, we need to take more public transport, drive less, plant more trees, clean up the haze, and let us breathe more fresh air. Let's be a civilized "little guard of environmental protection" together!

6 eliminate haze

In recent days, the sky is gloomy, can't see the sun, give a kind of chilly feeling. You see: nearby, the two cooling towers of the Banshan Power Plant are looming; in the distance, there is no trace of the Banshan. It also makes people lazy and depressed all day. Newspapers and TV are publicizing that the recent haze is serious, so we should try our best to reduce going out and opening fewer windows. It can be seen that haze seriously pollutes the air, reduces the air quality and affects human health. I really want to know the harm of haze to people, so I went online to check it. It's really "I don't know, I'm scared when I see it!"

Haze is composed of hundreds of atmospheric chemical particles. They include: organic sol particles, fuel and automobile exhaust. It can directly enter and adhere to the human respiratory tract and alveoli, causing acute rhinitis and acute bronchitis. For patients with obstructive pulmonary emphysema, bronchial asthma, haze weather will make the disease acute attack. If you are in this environment for a long time, it will induce cancer.

It has an impact on the cardiovascular system. There are many pollutants and low air pressure in haze weather, which is easy to cause acute attack of cardiovascular system. For example, when the fog is heavy, the water vapor content is high. If people exercise outdoors, it will cause chest tightness and high blood pressure.

Haze weather will also lead to the weakening of ultraviolet radiation near the ground and the breeding of infectious bacteria. Due to the reduction of sunlight, children's lack of ultraviolet radiation, insufficient production of vitamin D in the body, reduced absorption of calcium, causing rickets in infants, growth slowed down. It will also directly affect people's mental health, making people lazy and depressed. No wonder I'm in such a bad mood these days.

It seems that in order to eliminate the haze, we should reduce the emission of waste, reduce the dust, and especially drive fewer cars and use more public transportation. For a better tomorrow, let's start today's environmental protection action, blue sky, clear water, green, quiet need our own creation!