A 500-word composition on water
Water is the source of life and the sweet milk that feeds the children of the earth. Therefore, human beings should do their utmost to protect water sources and maintain ecological balance.
Water is precious. I remember once, because I was too playful, my mother locked me at home, and I was alone at home, feeling bored. One day, a monk bumped into a bell and picked up a water gun to spray water on passers-by downstairs. Soon, the boiling water my mother prepared for me was sprayed out by me. After a while, I was thirsty for water. However, I sprayed all the water, so anxious that I finally found a bottle of Coca-Cola in the refrigerator to quench my thirst. From then on, I knew the value of water.
People can't live without water, and small animals in the river need water more. However, because people do not pay attention to protecting water sources, most rivers are polluted and many small animals have suffered a tragic fate.
On Sunday, I did an experiment. I put two transparent water bottles into the water respectively. The difference is that one bottle contains clear streams and the other bottle contains polluted river water. Then I put a fish and a shrimp in it respectively. At first, these two small animals were very lively, but after two or three days, the shrimps living in the polluted river have been swimming feebly in the water, sometimes floating upside down on the water, while the small fish in the clear water are alive and kicking. In the afternoon, the shrimp has completely left this world. My little body is floating on the water, and my two crystal clear eyes look at me, as if complaining about why I put it in the polluted water.
I think: so many people have loved polluted rivers, and how many lives have suffered the same unfair fate as shrimps?
Humans, please cherish the water source, don't let it run away in vain, protect the water source and don't let it be polluted again!
The second part of a 500-word composition about water
Water is the source of human life. Without water, people can't live and trees and seedlings will dry up.
Water is now seriously polluted, and fresh water resources are getting less and less. Take our canal as an example. Once crystal clear, now? Due to being swallowed up by the wastewater discharged from factories and the domestic wastewater of citizens, the clear river has turned black, and bottles, plastic bags and waste products are floating on the river, which smells a bad smell from a distance. The canal became a stinking ditch. Now the city government intends to rebuild the canal. How much manpower, material resources and financial resources does it take to restore the original appearance?
In order to create a beautiful environment, we try our best to use water-saving equipment, widely publicize the benefits of water conservation, and make people consciously realize that water is a valuable resource. We should cherish every drop of water, let's start from the small things around us, start from ourselves, protect the limited water resources and protect the environment on which people live.
The third part of a 500-word composition about water
This afternoon, our class took part in a trip to save water. We will first collect water samples from Rose River, the mother river in Lianyungang, then go to Huaihai Institute of Technology for water quality testing, and finally go to the Water Resources Bureau for an interview.
After half an hour's drive, we arrived at the Ross River. The students saw the muddy river rippling in the sun in the distance. The river is so muddy that it seems that someone has mixed a bucket of green paint into it. Looking all the way along the wooden bridge in the water, there is mud everywhere. The water is covered with duckweed and other aquatic creatures, and there are mineral water bottles and garbage bags everywhere. When the students saw this scene, they took pictures with their cameras one after another and said that they must not throw things around again. Throwing a small piece of paper is not big, but it is a hidden danger. What a great harm this is to nature!
Taking water samples, we went to Huaihai Institute of Technology, and the teacher took us to the laboratory. Everyone was amazed: the desk was full of bottles and cans, and the experimental teacher magically squeezed a little water sample on the glass and lit it with an alcohol lamp. The water suddenly changed. Put on a black robe and spray it with another small watering can. The current is very fast? Change clothes? The technology changed into purple clothes, and the experimental teacher took another photo of the microscope. All bacteria show their true colors. This time, let's take a look! That's disgusting! People are accused of littering, and the sewage discharged from factories destroys the water environment.
Finally, we went to the Water Conservancy Bureau, and the director, Uncle Hu, received us. He briefly explained the imminent water crisis in Lianyungang. He said that many people not only waste water, but also destroy the water environment. There is a pool behind his house, and people throw leftovers and garbage every day. Now it has become a small garbage dump, which gives us great inspiration: water is not infinite, and it is not always pure. Why should we hurt the rest of the earth?
We spent a special afternoon.
The fourth part of a 500-word composition about water
Yesterday, I went to play with my sister and saw an uncle with a big brush and five big characters written by the pool. Please save water. Then, uncle turned the tap to the maximum and began to wash the pen.
After washing, the water flooded the pool and flowed in all directions like a flood. My uncle still turned a blind eye and went his own way. In order not to let the water splash on himself, he hid far away.
The water is gushing, as if to say sadly: Alas, some people really don't know what value we have and how much we have contributed. Plants will die of thirst without water, and we must know that the fresh water resources in our country are becoming more and more tense. Alas, I sighed after listening to it, thinking: That uncle wrote a few big characters himself, please save water, but he himself is wasting water resources. What he said is completely inconsistent with what he did! So I went over and said politely to my uncle: Uncle, water is the source of life. If you don't save water, it's too late to regret it when the water runs out. Plants will die of thirst and humans will cease to exist. How precious water is to human beings!
After listening to my words, my uncle paused, looked at me in surprise, blushed to his ears and said, son, you are really my teacher. Then he quickly turned off the tap.
Save resources, start with me.