【正文】 Starting from protecting the school environment, we can fill the windowsill of the classroom with flowers and plants. Students, we are the masters of the 21st century. Environmental awareness is the symbol of modern people. We should have the sense of responsibility of the times and make due efforts to beautify and purify the environment. “Don’t do it with evil and don’t do it with good”. Let’s work together to love our beautiful home and start from now on—— Let our beautiful home, the breeze often blows the green willows, and the clear water always acpanies the Cangshan!　　There is only one earth for human beings. It is the natural resource for human survival. If people want to live a happy life, they must consciously protect the natural environment and love the earth.　　However, in recent years, the earth’s environment has bee worse and worse: global warming, hurricanes, rainstorms and other disastrous weather occur frequently, “SARS”, avian influenza and other infectious diseases occur from time to time, which brings serious threats and many inconveniences to human life and work. These are the results of people constantly “hurting” the earth.　　Large areas of forests have been cut down, green mountains have been excavated, beautiful grasslands have bee deserts, and clear rivers have bee turbid currents. With fewer trees, bald green mountains, barren grasslands and black water, people’s living environment is deteriorated, the air they breathe is deteriorated, and the living environment is “occupied” by many harmful things. The virus takes the opportunity to get into people’s bodies, and we humans will suffer from some terrible diseases.　　A few days ago, I saw such a cartoon in the newspaper: a man was sitting on the top of a tree, cutting down the branch he was sitting on. “Hum, that’s funny.” Some people may think so. Don’t you think it’s just a funny cartoon? Isn’t it satirizing us? Don’t you realize that it is warning us that human beings are unknowingly hurting themselves while destroying the environment.　　When you walk in the street, if you want to spit, what will you do? If you choose to vomit on the ground, have you ever thought about it? Are you hurting yourself? A mouthful of sputum contains a large number of bacteria, which will reproduce and infect when the sun is shining. Similarly, when you cut down a tree, when you dig up a piece of grass, when you pour dirt into the river, don’t you think it’s damaging the environment and “hurting” yourself?　　As the saying goes: “our predecessors planted trees and our descendants enjoyed the cool”. Our predecessors gave us large tracts of forest and green space. What do we leave to our descendants? Whether it is a bare desert or a dense forest, you must choose a dense forest. There is no hesitation. Let’s consciously protect the environment, consciously love the environment, consciously greening the environment, improve our living environment and create a better future!　　Since we cried out the first cry, we came to this beautiful world. There is a blue sky overhead, feet on a fertile land, fresh air and warm sunshine. This is our beautiful home together.　　But now, mother earth is really crying and sending a weak signal of help to people. All kinds of natural disasters are ing to people. Not far away, it is said that Yunnan, China, has suffered the worst provincial drought in a hundred years in recent years. Chuxiong City is particularly serious, with more than 200000 rural people short of water. The severe drought has caused difficulties in drinking water for million people and million large livestock in the province.　　In 20XX, the sown area of wheat was 37 million mu, and the affected area reached million mu, accounting for 85% of the sown area. Water is now regarded by them as the most precious thing. Yunnan has always been a place with mountains and water. How could it get to such a point? The ultimate cause of natural disasters is partly manmade. Because people cut down trees excessively, resulting in water and soil flow, people plant a large number of Eucalyptus in order to seek benefits. Eucalyptus is called “water pump”. As the name suggests, Eucalyptus growth needs a lot of water and nutrients. As long as the soil planted by Eucalyptus will bee exhausted and have no water at all.　　In this way, human beings destroy the environment, do not cherish their homes, only for the sake of immediate interests. But why can’t we step back and think about this rich earth, this blue sky, this fertile land, where the forests are lush, the rivers are clear, the birds are singing and the flowers are fragrant, all of which are not the most precious and valuable wealth given to us by God? Without all this, what is the use of oth