The Earth, the environment for human survival, is the only planet suitable for human habitation, so the change of the earth should be the focus of our attention. The main cause of global warming is the massive use of fossil fuels and emission of greenhouse gases in the past century. Massive burning of coal, natural gas and other greenhouse gases; Wantonly cut down the original forest, so that the ability to absorb carbon dioxide is reduced. The consequences of global warming, such as the redistribution of global precipitation, the melting of glaciers and permafrost, and the rise of sea level, will not only harm the balance of natural ecosystems, but also threaten the food supply and living environment of human beings. Polar bears are killing each other, the El Hierro tuatara is on the brink of extinction due to climate change, warm winters have disrupted flowering, and cherry blossoms are blooming early across Japan. Because of the warm climate in Moscow, the warm winter, brown bears can not hibernate; France suffered a mild winter this year, and the number of migratory bird species has decreased significantly. "Warm winter" is also in most areas of our country. A warming climate will change the varieties of major crops in our country, which will also cause an increase in water scarcity and mortality. Mankind will have to pay an increasingly heavy price for climate change. As I learned this, my heart gradually sank. At present, as an ordinary middle school student, I can do something for this world problem? Start from now, start from the daily small things, for tomorrow to lay a good foundation. Saving energy and protecting the environment are the key. Today, some places are facing the crisis of survival because of energy exhaustion, while some places are wasting. We should start from our own, form a good habit of saving, save every drop of water, every kilowatt. See others waste, to actively stop. There is also a need to find effective ways to solve this problem. This is not just for scientists, but for everyone. As a middle school student, we only master the rich scientific and cultural knowledge, in order to solve this problem in the future to make a great contribution. Let all mankind pay attention to the issue of climate warming, so that all countries in the world have full vigilance and consciousness. Save energy, protect the environment, let's work together. For more about the greenhouse effect, you can find it on the Excellent Composition channel. 本文来源：https://www.wddqw.com/doc/e861b340ecf9aef8941ea76e58fafab069dc44cd.html