A composition on global warming

When I went to school on Thursday morning, I found that all the cars in the community were covered with white gauze and it was snowing! But I'm sad again-it's only mid-June 1 1, and it's snowing so soon because of global warming. 19 night, I found a report about "natural gas shortage" when reading the newspaper. Why is there a shortage of natural gas? I opened the page with this question. "Global warming causes the weather to turn cold rapidly, and every household begins to use a lot of gas ..." A line of small print under the heading caught my attention.

Global warming again! I can't understand why this "global warming" has such great power, making the weather cool quickly, making it thunderstorm in winter and snowing in summer. My mother told me that the cause of global warming lies in human beings. We don't protect the environment. In summer, we use a lot of air conditioners and drive private cars frequently, which produces a lot of waste gas and destroys the ozone layer of the earth, and the radiation of the sun to the earth is more serious. Glaciers in the Antarctic and Arctic also melted and the weather became cold. Hey! After all, it's still our fault. The selfless earth has given us all her resources, but we have created "global warming". Now, the resources endowed by nature are in short supply. What shall we do in order to make up for our previous mistakes, we should save the resources given by nature and try not to use air conditioning and geothermal heating. If you must use air conditioning, don't exceed 20℃. We can't make the earth sad any more.

Chapter 2: When the global climate is warming,

Great changes have taken place in the world when the global climate is warming.

In the Antarctic, the ice and snow melt, and human beings feel that they will be in ice water, which is what human beings eat. Due to global warming, the polar bear, the dominant polar bear in the Arctic, is becoming extinct. Mother bear always hands little bear a pair of scissors. Baby Bear asked curiously, "Mom, what are you doing with scissors?" Mother replied in a commanding tone: "cut your hair quickly, or you will die of heat if you grow such thick hair again!" " Bear looked at his mother innocently: "We live in the ice and snow, how can it be hot?" "This is our coat. Without it, it will freeze and cannot be cut! " Mother bear sighed in a sad tone: "global warming is not appropriate now, I am afraid it will go extinct!" " "

Global warming, polar bears can't find food, even their cubs eat, which is helpless! Human beings should deeply reflect on their own behavior, but when global warming, human beings are unaware of their mistakes! I only know that winter is no longer tortured by the cold wind, the temperature has risen, and the cold has left. I only care about the immediate interests, but I don't know that I will stay away from the snow in the future and the flowers that should bloom in the cold winter.

At the time of global warming, I hope that mankind has realized the consequences. Make up for it before it happens!

The third part: the reverie of global warming

At present, global warming is serious. This is not only related to air pollution, but also to the movement of the sun.

The solar system is like an endless spider web, with the sun in the middle and the earth scattered beside it (from a distance, the earth and the sun are very close, but in fact they are far away, which is unimaginable). The earth moves around the sun, just like putting a big iron ball on a big net, and then putting a small iron ball where the big iron ball is sunken. At this time, you will find that the small iron ball will turn around the big iron ball, and stay away from the big iron ball first, which is very slow. After a while, you will find that the small iron ball will turn faster and faster, get closer and closer to the big iron ball, and finally collide with the big iron ball.

According to this discovery, you may know the cause of global warming. The sun is motionless like a big iron ball in the center of the net, while the earth revolves around the sun like a small iron ball. Because the distance between the sun and the earth is too great, it takes a long time to collide with the sun. Now the earth is slowly approaching the sun (it is close, but it is still far away). Therefore, the cause of global warming does not rule this out.

This is just a guess. However, I don't think this reason can be ruled out. Who knows what will happen to the earth in the future?

expect

Chapter 4: Investigation Report on Global Warming

After investigation, we found that the main reason for the increase of greenhouse gases is human activities. Take carbon dioxide as an example. At the beginning of19th century before the industrialization of human society, the concentration of carbon dioxide in the atmosphere was 270ppm, but it rose to 350ppm in 1988. There are two main reasons for the increase of carbon dioxide concentration in the atmosphere: first, the rapid increase of population and the development of industrialization, the sharp increase of fossil fuels consumed by human society, and the large amount of carbon dioxide produced by combustion enters the atmosphere, which increases the concentration of carbon dioxide in the atmosphere; Second, the destruction of forests reduces the amount of carbon dioxide absorbed and utilized by plants, reduces the speed of carbon dioxide consumption, and increases the concentration of carbon dioxide in the atmosphere. Greenhouse gases other than carbon dioxide, such as methane, chlorofluorocarbons and nitrogen oxides, have also increased to varying degrees.

Although there are many uncertainties, it is obvious that the impacts of global warming on climate zones, precipitation and sea level, and the resulting impacts on human settlements and ecosystems are extremely complex, and we must pay due attention to them. It is irresponsible to think that this influence is irrelevant in the long run.

The main causes of global warming are the destruction of the atmosphere, serious pollution and the possible impact of global warming. Global warming will bring complex potential impacts on the earth and human beings, both positive and negative. For example, with the temperature, the sub-polar region may be more suitable for human habitation: under appropriate conditions, higher carbon dioxide concentration can promote photosynthesis and make plants have higher carbon fixation rate, which leads to the increase of plant growth, that is, the yield-increasing effect of carbon dioxide, which is a positive impact of global warming. However, compared with the positive impact, the negative impact of global warming on human activities will be more enormous and far-reaching.