I think everyone is familiar with paper. It cannot be overemphasized that the invention of paper played an important role in human history. As we all know, the spread and accumulation of scientific progress can not be separated from paper, which is one of the four great inventions in China. But you know what? The production of 1 ton paper requires 0.875 tons of wood, 0.5 tons of coal and 375 tons of water, while China is a country with extremely scarce resources, and a lot of wood is needed for papermaking. The existing forest coverage area in China is only 13% of the land area, and the per capita forest area is only 17.2% of the world average, ranking 168 in the world. It is far from the international average level, and it needs to rely heavily on imports to produce pulp, which requires a lot of energy and water resources. Therefore, pulp has always been called "a big consumer of energy, water and sewage". At the same time, China is also a country with poor water resources, with a per capita water consumption of only 2,340 cubic meters, ranking 88th in the world and being included in the world 12 list of water-poor countries. In the process of producing paper, it will also cause 35% water pollution, that is, after producing 1 ton of paper, it will produce 13 1.25 ton of sewage. In the process of producing paper, chlorine bleaching has caused great damage to the ozone layer above the earth. In the past 30 years, the ozone layer over Antarctica has been reduced by nearly half, and a big hole has appeared. Due to the thinning of the ozone layer and the increase of ultraviolet radiation, the number of patients with skin cancer and cataract has increased greatly, which also reduces the production of food crops and the function of marine plants, which may lead to the crisis of the whole ecosystem. So we should save paper and use it environmentally. If each of us saves L sheets of 16 paper, and there are about 65438+300 million primary school students in China, then we can save 65438+300 million sheets of paper, and the L kg of 16 paper is about 400 sheets, then the paper saved in primary schools in China is: 65438+300 million ÷ 400 = 320. I remember just hearing an amazing scientific data a few days ago. Every 5,000 pieces of paper will use up a tree 3 meters high. So,19991999 on February 5th, under the leadership of students involved in Yuan and Japan, a "paper team" was launched, advocating "reuse of waste paper, double-sided paper and protection of big trees". So children in many places used double-sided paper to carry out "one paper team" activities, such as "Beijing Gold Medal One Paper Team" and "Qingdao One Paper Team". But we know from our school that there are more than 2,500 students in our school, and each student needs about 10 notebooks each semester, and each notebook is generally 38 to 40. Our students use more than 100 W sheets of paper each semester, which is equivalent to using more than 200 trees with a height of 3 meters. What amazing data this is. And these books are all thrown away in vain after only one side is used. If we use the back of each piece of paper and only use five books, then the country can cut down more than 65,438+000 trees, which is great for our mother earth. On the contrary, as long as each of our classmates tore up two pieces of paper at will, the whole school threw away more than 5,000 pieces of paper, which is equivalent to destroying 1 3-meter tree. Tearing up two small pieces of paper is a great loss for our mother earth. I really don't know. At first sight, I was shocked. There are a lot of waste paper in our life, which has a serious impact on our living environment and even endangers people's lives. So I suggest that all the students in the school take action, and we also form a "paper saving" team. Let's save paper, start from ourselves, start from our side, and do something for Mother Earth, on which we human beings depend! Save paper and protect the earth