Save electricity, protect resources and reduce pollution.
Electricity is something that every primary school student comes into contact with every day, and it is also an indispensable thing in our daily study and life, but now its consumption is amazing. Therefore, every move when using electricity should start with saving.
In China, power generation mainly depends on burning coal, and the coal on the earth is limited. According to the current consumption rate, the global coal will be consumed within 250 years. After that, we will have no coal for our future generations.
Saving electricity means saving coal and directly contributes to reducing air pollution. Because acid rain is formed by burning coal, it can strongly corrode buildings, acidify soil and water, lead to reduced grain production and death of plants, fish and shrimp. According to calculation, the annual economic losses caused by acid rain in southwest and south China alone amount to 654.38+0.4 billion yuan.
Saving electricity can slow down global warming. Because of the large amount of carbon dioxide emitted by coal burning, it blocks the heat from the ground to the outside of the sky like a cover, which has produced the greenhouse effect. If the earth's temperature rises, it will cause drought or flood and melt icebergs. If all the icebergs on the earth melt, countries and islands with lower altitudes will disappear.
Living today, we are bound to enter the next century. Many of them are vulnerable to global warming. 65,438+035,000 children in 65,438+092 schools in Germany vowed to reduce the harmful gases that cause the greenhouse effect in their communities by 65,438+00%. They put on energy-saving lamps, refused to use air conditioners, gave up cars and chose bicycles. After seven months of hard work, they achieved their goal.
In a blink of an eye, we have entered a beautiful June, which is a great opportunity to plant trees and green the country. In order to create a good green home and protect the ecological environment, I suggest that students:
Love nature, love flowers and trees, and protect animals.
Carry out tree planting and green protection activities.
Actively advocate environmental protection and let environmental awareness enter thousands of households. Be a little guardian of the earth's environmental protection (speech)
Hello, teachers and classmates
The topic of my speech is: to be a little guardian of environmental protection on earth.
Over the years. Our country has been seriously polluted by the environment. Repeated sandstorms in China will bury grasslands, destroy homes, seriously affect people's lives and make it difficult for us to survive. Green grass will become a desert, trees will lie on the ground forever, and we will not live happily: happiness will be gone, and even the earth on which we live will be shattered in the vast universe, just like glass falling to the ground. However, this is not just a disaster caused by sandstorms.
Now, even the South Pole has been polluted and destroyed. Therefore, the earth has lost the last piece of pure land. Mount Tai used to be a good place for people to watch, but now it has also become a protected area.
And we can only stand by and watch this beautiful and fragile earth disappear forever? From then on, can we see the wind blowing and grass watching cattle and sheep, and can we see horses running under white clouds? Although we are only primary school students, we can still make some contributions to our hometown and make Dingxi rise in hope.
Some students may know that there is a Lop Nur on the edge of Taklimakan desert, which is a vibrant oasis. There will be fresh air, desirable environment, full of green and jungle all year round, which makes a few people living there rekindle their hopes for an oasis in the desert. But who knows that the holy land, which lasted for hundreds or even thousands of years, was actually disappeared and destroyed by the fools there. The death toll is increasing one after another, and the forest has been seriously polluted by the air because the rotting bodies are not buried, and the forest is disappearing day by day. Through the sunshine that almost scorched the land of Lop Nur, you can vaguely see the pain of Lop Nur! Is missing, missing the past cattle and horses, green mountains and green waters; It is sighing, sighing yellow sand and Wan Li, dead trees and dead branches; It is the yearning for the source of life and the root of all things. However, human beings, a huge water-absorbing ghost, cut off its last glimmer of hope. As a result, the long green embankment built with the desire for life collapsed. ...
April 22nd is a festival of the earth every year. It has been 30 years now. Because of the "three wastes" pollution (waste water, waste gas and waste residue) and the "top ten pollution", a large number of people all over the world get sick, disabled and even die every year. However, white pollution is free. It runs amok in the sky, piercing the clothes of Air Brothers and Ozone Brothers, making the sand in the desert fly forever and disturbing people's lives. Uncle naturally did not dare to object, and left people in a hurry.
If we can't stop it, white pollution will severely punish mankind. In the end, not only rare animals and plants, but also human beings will eventually become extinct in the desert.
Students, we can't live without the earth. We are bound by the same fate. Uncle nature expects it to go home. Mother Earth entrusts the heavy responsibility to mankind, because only we can save the happiness of the earth and mankind: let the green stop sighing, let nature stop crying, let the scars of Mother Earth disappear, and make the earth more beautiful, strong and lovely tomorrow!
Now the earth is all yellow, and the green is greatly reduced. What happened? It turns out that this is because people cut down a lot of trees, which not only makes birds lose their homes, but also causes collapses and floods. Without trees, our earth seems to have no pillars.
Now all the shops are following our hobby, producing a lot of soft drinks. The "coat" of soft drinks is canned, which is a kind of pollution. Roads, parks and even schools have become their homes. Some cans are made of aluminum, which is also harmful to human body.
Do you know that?/You know what? Do you know that?/You know what? Waste batteries contain a lot of heavy metal pollutants-chromium, lead, mercury and so on. The pollution caused by waste batteries is slow and far-reaching. When they are mixed with ordinary household garbage, under certain conditions, a series of chemical reactions will slowly occur, releasing toxic substances, which will pollute the atmosphere when burning and pollute groundwater or rivers and lakes when infiltrating underground; Once it enters the soil water source, it will enter the human body through the food chain, damaging people's nervous system, hematopoietic function, kidneys and bones. Therefore, it belongs to hazardous waste. Tests show that the amount of water polluted by mercury batteries exceeds the sum of a person's lifetime water consumption.
In the past, the river was crystal clear and small fish could be seen. Now the factory regards this river as a good place to discharge sewage in order to improve efficiency. The river was polluted by sewage, and passers-by quickly left.
Saving water means protecting our environment, that is, saving resources. We should take our own practical actions to protect the environment. The simplest way is to start from ourselves and pay attention to saving water. For example, turn off the faucet at any time after use; Water the flowers with vegetable washing water, rinse the mop and flush the toilet. Don't think that a few drops of water in the tap are nothing. If a faucet drops a drop of water every second, it will lose 36 cubic meters of water a year. If a household saves one side of water every month, how much water does the whole country save in one month?
Fortunately, now people have realized that the earth is polluted, and everyone has taken action. I hope those who haven't acted will bend down and pick up the paper on the ground, so that our tomorrow will be more beautiful and tidy!