As we all know, the global climate is warming. In recent years, summer has come very early, and the average temperature is very high. Especially this summer, it is really hot. You see, it's the Mid-Autumn Festival, and the highest daily temperature is still 30 degrees. In summer, the leaves are exposed to the sun and the fields are cracked. People stay in air-conditioned rooms and are afraid to come out. It is often reported that old people, children and small animals in some places have been killed by heat ... Global warming will bring very serious consequences, such as glacier retreat, sea level rise and desertification, and it will also have a serious impact on ecosystems and agricultural production.

Why is the global climate getting so hot now? According to scientists' analysis, the main causes of global warming are atmospheric destruction, serious pollution and greenhouse effect.

Scientists believe that human activities are the fundamental cause of climate warming. Human activities make the earth absorb more energy than the sun provides, which brings about an imbalance between energy supply and demand. The imbalance between supply and demand of energy leads to more and more serious air pollution, especially greenhouse gases, which prevent the earth's surface from radiating heat to the atmosphere and make the earth's climate warmer and warmer. Greenhouse gases mainly refer to carbon dioxide. The higher the concentration of carbon dioxide in the atmosphere, the hotter the weather will be.

Climate warming will become the main factor affecting human health. Human health depends on a good ecological environment. Extreme high temperature will disturb human health more frequently and generally, which is mainly reflected in the increase of morbidity and mortality, especially infectious diseases such as malaria, schistosomiasis, hookworm disease, cholera, meningitis, leishmaniasis and dengue fever will endanger tropical regions and countries, and some diseases mainly occurring in tropical regions may spread to mid-latitude regions with climate warming.

2 1 century witnessed the rapid development of science and technology, the progress of human life and the harm of human activities to the earth. Although people now know the seriousness, the government is also vigorously promoting environmental protection knowledge. For example, China has made universally recognized contributions to slowing down the growth rate of global greenhouse gas emissions by improving energy efficiency, developing and utilizing non-petrochemical fuels such as hydropower and other renewable energy, planting trees and controlling the population growth rate. But many things around you are still hard to prevent! For example, in order to save money, some "dirty" manufacturers discharge waste water, black smoke and garbage into nature without treatment. For example, now that life is good and cars are common, exhaust pollution has increased.

We only have one earth! Although there are many reasons for global warming, human activities should be based on environmental protection, because these are closely related to ourselves! Here I would like to appeal to everyone: "protect the earth, starting from me, starting from now, starting from the little things around us!" " "