But the good times didn't last long, and in this world, a strange animal appeared, that is--humans. They became the rulers of the world and got away with it all over the world and they started polluting the water resources.
One beautiful morning, just when the animals were happily jumping, singing and flying, a loud noise startled all the animals, they looked up to the shore, they saw people, people used bulldozers to overthrow all the trees along the shore, and then they started to build a house, and after a few months they built a factory, which was even worse, the people in the factory discharged the wastewater from the factory into the water. The people in the factory discharged the wastewater from the factory into the water around the clock, which made the water there polluted, and the lives of the fish were threatened because of it, and they kept dying, and there were fewer and fewer of them day by day.
After the Nogan years, imagine what it was like. There has been a radical change, because of the factories there continue to discharge wastewater into the reservoir, where the management does not pay attention to the importance of protecting water resources, so the water is polluted by the factories black, you walk into it, there will be a pungent odor makes you cough, all the fish here, not to mention, one by one, they die a tragic death, in the water turning the belly of the fish floating, you will feel sick to see, you will feel sick to see, you will feel sick to see, you will feel sick to see. The look of it will make you feel sick. But wouldn't you find the humans here even more disgusting? They are the ones who make the beauty of this place disappear.
In this story, all the consequences are caused by the humans themselves. It is true that they do not want to protect the water resources because they are doing it for their own benefits.
There is only 0.16 percent of fresh water in the world, but a lot of it is hard to drink, and a lot of the remaining fresh water is polluted. I want to tell people: human beings, water is the resource of life, water is the root of life, no water, is the same as no life, human beings, do not pollute the water resources for their own interests, protect the water resources! Humans!
Respondent: fo4rlong - Assistant Third Grade 3-29 09:28
Charge resources, save water, from you and me (speech)
Nada Center School Qiu Wenbin
Teachers, classmates, uncles and aunts, everyone, my name is Qiu Wenbin, from the center of the school of Nada. Today, the topic of my speech is "Cherish resources, save water, start from you and me".
Our earth is a blue water sphere, covered by water; but most of it is salty water, which is not directly drinkable, and there is not much fresh water that we can really utilize. It has been compared to the fact that there is only a tablespoon of water available in the big tank that is the Earth. Currently, more than half of the world's population of about 1.5 billion people face a shortage of fresh water, of which 450 million people in 29 countries live in a state of complete water shortage. The phrase "water is as expensive as oil" is a metaphor, but in many parts of the world, it has become an irrefutable reality.
As early as 1977, the United Nations held a conference on water, issued a solemn warning to the world: water will soon become a profound social crisis, following the oil crisis, the next crisis is water. Water as an inexhaustible, inexhaustible era has passed, the water as a valuable resource of the era has come. Our country's per capita possession ranks only 84th in the world and is one of the 13 water-poor countries in the world. There are 300 cities in China suffering from water shortages, nearly 50 cities suffering from severe water shortages, and 14 of the 18 coastal cities suffering from water shortages. China is also facing a serious water crisis and there have been water shortages in many places. Please listen to these figures: in the summer of 1988, residents of Wuhan city forced to open 50 fire hydrants to get water for use. 1989, the city of Xi'an, once known as "eight water around Chang'an", water cut off in an area of 27 square kilometers, according to the relevant part of the water resources report, the water level of the groundwater of Kunming City, Yunnan Province, which is relatively rich in water resources, is declining at an average rate of 0.5 percent per year. The average annual water level decline rate of 0.11 meters to 0.31 meters. This one terrible fact, this one alarming figure, can not cause us to pay attention?
But around us, there are still a variety of phenomena of waste of resources, once a few big brothers in our school, opened the tap for students to wash their hands with water, water fights, the tap water is flowing down, see this, I rushed forward to turn off the tap, but a few brothers are a hand to push me away, said: "What do you care? Go away!" . According to my observation, similar phenomena occur in our lives: in broad daylight, the lights in the office are on; in the cooler fall, the air conditioners and fans are spinning; and the water from the communal faucets is often dripping. When will these phenomena disappear? Do we have to wait until water resources are scarce and depleted before we go back to talking about conservation?
"Saving water" is not about restricting the use of water, let alone preventing it. In fact, water conservation is to allow people to use water rationally and efficiently. Water conservation does not affect our quality of life. Everyone has the obligation to cherish the resources and to correct the waste of water by others. The view that "as long as I pay the water bill, I can spend as much as I want, wasting water is my own business, no one else can care" is wrong, the view that "water is only 70 cents, it is very cheap, it does not matter if you use a little more" is even more harmful. Water conservation is the responsibility of every citizen.
China's Water Law states that water resources belong to the state, that is, all the people have. Countries around the world have also stipulated that water is public **** property. Therefore, everyone should have a sense of public water. Electricity resources are also very precious, cohesion of many people's hard work. Everyone should take care of water, water conservation, against pollution of water, waste of water.
"All the past sages of the country and family, success by hard work and thrift defeat by luxury." Thrift and hard work, hard work and thrift school, this is a kind of public morality, but also a virtue.
Students, uncles and aunts let us take action, let us cherish the resources, for *** to build a saving society and strive.
My speech is finished, thank you!
When it comes to water conservation we first need to understand what water is. Humans have long known water, the use of water, water colorless, tasteless, odorless, transparent, is the most common liquid in nature. Ancient philosophers believe that water is the source of all things, all things are restored to water, so has been water, fire, gas, earth as the four basic elements, by which they constitute all objects in the world. Until 1784, the British scientist Cavendish with experiments to prove that water is not an element, is a product of two gases combined. 1809, the French chemist Gelusac determination, 1 volume of oxygen and 2 volumes of hydrogen combined to produce 2 volumes of water vapor. Later scientists came up with the molecular formula for water: H2O. The various roles that water can play as a liquid are mostly irreplaceable by other substances. This is mostly due to some of the strange temperament of water. For example, water at 4 degrees Celsius when the density of the largest, and then cold, but the volume of expansion up, so the ice is lighter than water, floating on the surface of the water, the ice is not good at transferring heat, in order not to freeze in the end, to ensure that underwater organisms safe winter; water heat capacity is very large, is 10 times the iron, sand, 5 times, 4 times the air, so the oceanic climate is mild, and the human body also relies on the water to keep the body temperature; the water of the three states (water, ice and water gas) can be in a natural state **** survival; water cohesion, surface tension, so that rocks and soil crevices can "contain" water, water can "climb" high treetops, to plants to send water and nutrients; almost any substance can be dissolved in water, so the fish can get from water Oxygen. For many things it is possible to do this or that, there is always a way. For example, lighting, there is no electric light, we can light candles; there are no candles, we can light oil lamps; there are no oil lamps, we can light pine torches; even the torches are not available, we have to wait quietly for the night to pass and the day to come. And for water it was different. No water, we can not wash our faces, brush our teeth, can not quench their thirst, there is no fish and shrimp on the table, can not see the flowers, plants and trees, do not know what is called swimming, ships and boats are all scrapped, the concrete block can not be, high-rise buildings can not be built, and even the little dolls cry no tears ...... ah, or do not think about it down the line! On earth, where there is water, where there is life. All life activities are originated in water. Water in the human body, about 65% of the body weight. Among them, the brain marrow contains 75% water, blood contains 83% water, muscle contains 76% water, even the hard bones contain 22% water miles! Without water,