There Is Only One Earth asks three questions

The questions are as follows: 1. Why is the earth small?

2. Why do you compare the earth to a mother and cradle?

3. Why do you say: Our earth is too lovely, and at the same time too easy to break?

4. Why do humans have only one earth?

4. Why can't humans move to other planets?

5. What would we do if the earth was destroyed?

1.Why is the earth small?

2.Why is the earth a metaphor for a mother? Cradle?

3.Why do you say:"Our planet is too lovely and at the same time too easily broken. "Exclamation?

Why do you say:"Our planet is too lovely and at the same time too easily broken. "Exclamation?

Why is the earth small?

Why is the earth a metaphor for a mother? Cradle?

1.Why do humans have only one Earth? 2.Why can't humans move to other planets? 3.What will we do if the earth is destroyed?

It was in this part that the astronauts who were fortunate enough to fly into space introduced that they looked at the Earth from afar while traveling in the sky, and they were greeted by a crystal clear sphere with blue and white lines intertwined with each other, surrounded by a thin layer of aqua blue "gauze". The earth, the mother of mankind, the cradle of life, is so beautiful and magnificent, so amiable. However, the Earth is also a planet with a radius of just over 6,300 kilometres.

Here, the white and blue marks on the earth are intertwined, and I know that the blue part of it is the ocean, so what is the white part? The atmosphere, or the white clouds, or the white desert?

1. Damage to the environment: Since the environment is one of the components of the ecosystem, its changes will affect the stability of the ecosystem. There are many examples of breaking the balance of the ecological environment due to the destruction of the environment, such as:

formation of lactomar eutrophication; mercury poisoning in Japan; Fluoride destroys the ozone layer; deterioration of the ecological environment of the Aswan Dam; the evil results of the application of "666" and "DDT"; the "wet-room effect" of the earth, etc. 2. Destruction of vegetation, vegetation with forests as the main body is the lever of terrestrial ecological balance, and the most ecological disasters caused by the destruction of vegetation on the earth, such as the black storm that occurred in the western United States in 1934, destroying more than 4,500 acres of cultivated land; In 1963, a major storm occurred in the agricultural reclamation area of the former Soviet Union, destroying more than 300 million acres of land; The destruction of forests also led to the extinction of the ancient Babylonian civilization; The Thar Plain, between India and Pakistan, has been reduced to a desert due to deforestation, covering an area of 650,000 square kilometers; The deterioration of the ecological conditions in the Yellow River Basin in China stems from the destruction of forest vegetation in the upper reaches of the Yellow River, and the Yangtze River will become the second Yellow River. The deterioration of ecological conditions in the northeast forest area is mainly due to the unreasonable logging and over-logging of forests in the southwest and northeast forest areas. 3. Disrupting the food chain

Examples of disruption of the food chain and disruption of the ecological balance include: forest pests and diseases caused by over-predation of insecticidal predators; In India, the killing of otters in large quantities has increased the number of diseased fish and reduced fish production; In Australia, where animal husbandry is developed, the rescue of dung beetles caused by cattle dung mulching grass is more new. Of course, in the biosphere, there are often several triggers coexisting.

There Is Only One Earth introduces the Earth from the following three aspects:

1. The shape of the earth;

2. The earth's limited resources;

3. The earth is the only planet found to be suitable for human habitation.

This article calls on people to protect the planet and stop destroying its resources.

The text begins with what astronauts see when they look at the Earth from space, leading to an introduction to the Earth; Then, from the insignificance of the earth in the universe, the small scope of human activities, and the limited natural resources possessed by the earth, which are exploited or destroyed at will without control, it shows that the earth is facing the threat of resource depletion. Then, with the results of scientists' research, it was proved that when the earth's resources were depleted, there was no second planet for human habitation; Finally, it is concluded that there is only one choice for human beings, and that is to carefully protect the earth and protect the earth's ecological environment.

The central idea of the lesson is to call on the people of all countries to pay attention to the preservation of the earth on which mankind depends. Starting from the development prospects of the whole earth, the book reviews the impact of economic development and environmental pollution on different countries from different social, economic and political perspectives, and calls on people of all countries to pay attention to maintaining the earth on which human beings depend. The book has been translated and published in a variety of languages, and has a wide impact on promoting environmental protection in various countries.

This article is selected from the 18 lessons of the first volume of the sixth grade of Chinese compiled by the Ministry of Education, the 21 lessons of unit 6 of the first volume of the fifth grade of the Beijing curriculum revision, the 1 lesson of the 10th unit of the first volume of the fifth grade of the Beijing Normal University edition, and the nine-year compulsory education published by Shanghai Education Press.

Lesson 35 of Unit 7 of the first volume of the fourth grade.

The extended material, "There is Only One Earth", uses a variety of explanatory methods such as listing numbers and giving examples.

It scientifically introduces the multifaceted knowledge of the earth, and forcefully explains the fact that there is only one earth. The rigorous use of words and vivid expression are the main characteristics of the language of this article. At the same time, the text uses metaphors, personifications and other techniques in many places, which reflects the vivid vividness of the language of scientific essays.

The full text integrates science, art and ideology, which not only introduces scientific knowledge, but also stimulates readers' emotions and enlightens their thoughts.

The central idea of "There is Only One Place to Do the Disturbing Ball" is written from the scene and conversation that astronauts see when they look at the earth from space, which leads to the introduction of the earth; Then, from the insignificance of the earth in the universe, the small range of human activities, the limited natural resources possessed by the earth, and the uncontrolled exploitation or destruction of pure leakage, it shows that the earth is facing the threat of resource depletion. Then, with the results of scientists' research, it was proved that when the earth's resources were depleted, there would be no second planet for humans to habit; In the end, it was concluded that there is only one choice for human beings, and that is to carefully protect the earth and protect the earth's ecological environment.

It expresses the physical ...... of the work on the earthSee the full ......

One is that the earth is beautiful and small;

Second, the natural resources possessed by the earth are limited;

Third, within the 40 trillion kilometers centered on the earth, there is no second planet suitable for human habitation;

Fourth, we must carefully protect the earth and protect the earth's ecological environment.

The earth is small and has finite natural resources.

Summary. Hello, I am Teacher C, and I have provided consulting services to nearly 100 people, with a cumulative service time of more than 100 hours! I've seen your question, and I'm sorting out the answer, it will take about three minutes, please wait a while If my answer is helpful to you, please give it a thumbs up, thank you

Hello, I am Teacher C, and I have provided consulting services to nearly 100 people, with a cumulative service time of more than 100 hours! I have seen your question, and now I am sorting out the answer, about three minutes to rent a forest, please wait a while and be honest Oh If my answer is helpful to you, please give it a thumbs up, thank you

There is only one Earth", this is the slogan of the 1972 Conference on the Human Environment held in Stockholm, Sweden, and World Earth Day, which is celebrated on April 22 every year.

1. There is only one earth, the main content is that the earth is small, and the natural resources possessed by the earth are also limited, and scientists have proved that the current earth is the only planet suitable for human life, which illustrates the importance of protecting the earth's ecological environment, and reminds people to carefully protect the earth, so that the earth can better benefit future generations.

2. The text begins with the scene seen by the astronaut looking at the earth from space, which leads to an introduction to the earth; Then, from the insignificance of the earth in the universe, the small scope of human activities, and the limited natural resources possessed by the earth, which are exploited or destroyed at will without control, it shows that the earth is facing the threat of resource depletion. Then, with the results of scientists' research, it was proved that when the earth's resources were depleted, there would be no second planet for humans to habit; Finally, it is concluded that there is only one choice for human beings, and that is to carefully protect the earth and protect the earth's ecological environment.