Some students in school throw away less than half of the paper, which is too wasteful. Sinful human beings:

Although today's developed earth environment looks optimistic, there are very serious hidden dangers, which are all man-made: cutting down trees at will, setting up chemical plants, and discharging harmful liquids at will. "The world emits more than 600 million tons of gas that poses a greater threat to mankind every year. . . . . ; It is estimated that by the middle of the next century, one third of the earth's surface will be in danger of desertification, and 6 square kilometers of land will be desertification every year, threatening more than 60 countries. . . . . "What do humans think of these shocking figures? From 23 million years ago to the appearance of forest apes 6.5438+0.8 million years ago, and then to the highly developed civilization era of mankind, nature has always been "responsive" to everyone, which has further bred human greed. At present, China's reform and development is in a critical period. To achieve the goal of building a well-off society in an all-round way, all aspects should keep up. However, there are still some problems-our living environment has been seriously polluted; Green resources are also decreasing.

Many things we do pollute the environment. For example, once, in a clean small garden, some rubbish appeared, and gradually many people threw it there, which became a garbage dump. It turns out that there are green trees, flowers and grass in full bloom here. Bees and butterflies have settled there, and there is a charming atmosphere everywhere. But now, nothing grows there and it stinks. Even people don't want to stay there for a while. Alas! What a pity that such a beautiful garden is gone! If people pay attention to it and don't pollute the environment there, now, after some improvement, it will be a paradise. Besides, how wonderful it is for people to rest and enjoy the cool there! But now it has become a garbage dump, and the consequences of polluting the environment are really unimaginable!

In addition, many factory wastes pollute the environment, but the most serious one is water pollution. I have heard such a story: there is a village with a clear pond. There are lotus flowers and goldfish in the water, which are very beautiful. Visitors to this village will never forget to see the scenery here. Moreover, people in the village wash clothes and cook, and even drink water from the water here, so water is precious. One day, a businessman opened a factory by the pond, and the factory discharged a lot of waste water and garbage, which flowed into the pond one after another ... The consequences can be imagined: the goldfish died, the water side became sewage, tourists never came again, and the people in the village moved away one after another ... Alas! The small pond has disappeared. Factories have seriously polluted the environment, making the environment in the village very bad and affecting people's lives. Although this is a story, there are many such things in daily life, and the consequences are very serious, not just such simple consequences.

In fact, many things can seriously pollute the environment, such as littering, spitting, trampling on the lawn and so on. Their consequences are serious. But the waste of resources can not be ignored, the most serious of which is the waste of water resources.

Now, Beijing is a city with serious water shortage, but many people are wasting water resources. For example, the vegetable washing water and laundry water that many people use up will not be used again. In fact, although you can only save a little water, you can save a lot!

Also, people who sell fish in the market like to install a faucet next to them. When they usually use water, they throw it out and let it flow away in vain. If they go on like this, how much water resources will be wasted!

Drinks, wine, etc. We must use water in our daily life. Some factories use a lot of water, so some water can only be wasted. This wastes a lot of water. If you save this water, you can do a lot of things! You can also avoid not drinking water at all

I heard a story about water: people are rich, but they always waste water resources, and as a result, they run out of water resources. Nothing grows on the earth, animals and humans are extinct ... the result of wasting water is too heavy for people to think about.

But there are many phenomena of wasting electricity, such as many people's lamps, televisions, electric fans, water heaters and so on. Many household appliances have been on all day, wasting a lot of electricity! Others turn on household appliances without using them and leave them there for a long time. It's okay to waste a little. The most important thing is the waste of paper. Paper is so wasted that some people throw it away before using it. What a pity! Some people fold planes with big white paper. What a waste! Some children scribble on paper without using it in the right place. So, don't waste paper!

Using disposable chopsticks is harmful to human body and wastes wood.

Throw plastic bags, non-degradable, white pollution

Water, the basic substance on the earth, deserves our praise! She gave birth to the world and all sentient beings; It is she who provides energy for life and makes life survive; Or did she let life develop continuously and become more and more prosperous? Therefore, it is no exaggeration to say that "water is the source of life".

But is water inexhaustible? We can definitely answer: No, although 70.8% of the earth is covered with water, 97.55% of the water is seawater, which can neither be directly drunk nor irrigated. Of the remaining 2.5% fresh water, the water that humans can really use is less than 1% of the global total fresh water. It is true that from the appearance of primitive life on earth to the present, water has been serving life, working hard and never stopping. But I don't know if you have thought that there is a limit to the endurance of water, and now water resources are in short supply! There are two main reasons for this situation: first, the lack of nature itself; Second, man-made destruction. Of course, we can't blame God for being unfair to us and giving us a planet short of water. On the contrary, we should thank God for creating a beautiful home for us.

However, it is in this emergency that we humans continue to waste and destroy water resources. Because a large amount of industrial wastewater is discharged into Lian and Rong rivers, the water quality of the two rivers is seriously polluted, and the water quality only reaches the third class standard, so it can neither be drunk nor used for irrigation. As an island county like South Australia, its water use depends entirely on "God's arrangement"-the rainwater collection area of all Shantang reservoirs, including flood diversion projects, only accounts for 3 1%, and it is still difficult for industrial and agricultural production and people's living water. It can be seen that it is urgent to properly handle the pollution and destruction of water resources. However, there is a serious shortage of water resources in the world today, and wars caused by water are increasing day by day. For example, of all the resources in the Middle East, water is the most likely to cause crisis, and water in the Middle East is more expensive than oil. Most countries in the Middle East are seriously short of water. The Middle East has suffered from drought for more than ten years and is facing a serious water crisis. The Little Jordan River has given birth to two major religions, which is the most hotly contested water source in the Middle East, and four wars in the Middle East have been related to this. The Jordan River provides two-thirds of the water for Lake Galilee, Israel's main water source. The Johnston agreement of 1955 stipulated the water quantity of all parties, but only Israel signed it, and Arab countries wanted to cut off the Jordan River in the 1960s. 1965, the Israeli army bombed the interception equipment in Syria. Both Arab countries and Israel take the destruction of competitive water resources as their primary strategic goal, and Israel has occupied the Golan Heights, the birthplace of the Jordan River. One of the difficulties in Syrian-Israeli negotiations is that Israel insists on occupying most of the water sources in the West Bank. At present, the water resources in Palestine are completely controlled by Israel, and the per capita water consumption is only three-quarters of that of Jewish settlers, but the cost is as high as twice. Pakistan had to over-extract groundwater, which made the water quality worse. The groundwater in Gaza has become too salty to be used. Since the violent conflict, Pakistan's water resources have been neglected, and the water shortage is more serious.

There is no comprehensive agreement on sharing water resources among the three major water systems in the Middle East, and disputes continue. The Nile flows through 10 countries, and the upper reaches are influenced by Egypt. Egypt built the Aswan Dam, which solved the water problem, but it caused dissatisfaction among upstream countries. Whenever there is a dispute, Sudan threatens to cut off water. Ethiopia signed an agreement with Sudan in 199 1 to extract 4 billion tons of river water every year. Egypt strongly opposes it. Turkey is rich in water resources, and the construction of South Water by Turkey to reduce the water flow to Syria and Iraq has been strongly opposed by both countries. Turkey and Israel have reached an agreement to transport the Manafort River to Israel by world ships, and Jordan and Syria are also considering buying water from the soil. Turkey hopes to play its role as a water power and promote cooperation and stability in the Middle East. Israel wants Turkey to increase its water supply to Syria. In exchange for Syria's concession to the border of Lake Gali, Turkey refused to get involved in the complicated Arab-Israeli dispute.

It can be seen that the shortage of water resources will be buffered for a period of time in order to use the right. It is not easy. The only way is to save water, and in this respect, Israel has done better. Two-thirds of Israel is desert, and there is no rain for seven months in a year. The per capita water resource is nearly 70 cubic meters, which is less than 1/4 in the Middle East, 3% in the world and 1/8 in China. However, it is in this barren and water-deficient land that Israel has built modern agriculture through scientific water use, which has amazed the world.

Agriculture is the foundation of Israel's founding. 1952, Israel spent 100 and 500 million dollars, and completed 10/45 km of "South-to-North Water Diversion Project". In the mid-1960s, the scientific water use method of drip irrigation was popularized, which promoted the rapid development of agricultural economy. The agricultural population in Israel has dropped from 60% to 3%, and a farmer can support 90 people, with a per capita GNP 1 80,000 USD, ranking first in the world 12.