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The earth has an atmosphere suitable for human life, there is oxygen, the earth is kept at a fixed distance from the sun, and there is no other planet for human life for the time being, so it can only be on the earth.
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Because the earth has conditions suitable for human life!
Because the various physiological characteristics of human beings today are selected by the earth's environment for a long time - it is the earth that chooses the current human beings, not whether human beings want to come or not.
It's not that human beings can only live on the earth, it's just that at this stage, the technological level of human beings has not yet reached the point where they can travel between two planets.
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Because among the temporarily discovered planets, only the earth is the only planet that is suitable for human existence, and it has the basic conditions for biological survival--- light, temperature, water, atmosphere, etc.
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Because the earth has conditions suitable for human life! If human beings find a planet similar to the Earth one day, they will definitely be able to live on other planets!
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The earth has an atmosphere suitable for human life, there is oxygen, and the earth is kept at a fixed distance from the sun.
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Can you live without oxygen? Can you live without water? Can you live without plants and animals? Since the answer is no, why are you still asking this question?
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Because we belong to carbon-based life, with carbon and water as the basis of life. Most of the other organisms on the planet are also carbon-based, and the earth has nurtured us as a habitable place for us. At present, humans can go to other planets in the solar system with the necessary protection, but the conditions there are not yet enough to be a place to stay.
Due to the limitations of flight conditions, it is still a dream for humans to fly out of the solar system in the foreseeable time.
Because of the cosmic day weather;
Silver, Moon, Earth, and Moisture;
Continental longitude and latitude properties;
It is advisable to move the eggs and eggs.
The survival and reproduction of any life requires a suitable environment (suitable temperature, breathable air, sufficient water, etc.), and people are no exception. The environment on the earth just has the environmental conditions needed for the survival of human beings and other living organisms, so we can only live on the earth. It has been billions of years since the birth of life, but there is no such life that has survived from the earth.
The root cause of everything is that there is a cause and effect relationship between the earth and the suitable environment on the earth before the emergence of life. Therefore, if you want to survive without the earth, you will not be able to achieve it in a short period of time. Of course, with the continuous development of technology, we may one day find other planets suitable for human habitation.
Here, I recommend a BBC documentary "Human Beings From**", after watching it, you will understand better why we can only live on the earth. [呲tooth]
Hello everyone! This season, this year, I think it's the least lively year! Before the epidemic is completely controlled, I hope everyone will wear masks when they go out! I'm a creator in the field of science, and here's my opinion on this topic:
The temperature difference between the closer and the farther is not available, these are the reasons why we have to protect the earth.
Science has been so successful that thousands of terrestrial planets have been discovered, and it has been shown that these stars are likely to be habitable, but how to get past them is a question.
The first is energy, the weight of the spacecraft will also increase if it is loaded with more energy, and solar energy will be useless when it comes out of the solar system, and the nearest terrestrial planet, Ross 128b, is still eleven light-years away from Earth!
Sounds short, but don't forget it's the speed of light!
So human beings can't leave the earth.
That's the end of my Q&A, thank you for reading it! Finally, I wish Wuhan to get out of the epidemic as soon as possible! Everyone in Wuhan is a hero, so you must be strong! I wish you all the best in 2020 and thank you!
Where do you want to live? By you! Get away with murder! It's nice to see the miracle of life! I still want to go to heaven! Human desires! Really tall ducks! Greed, hatred, stupidity!
The body structure of frogs is suitable for survival in water. But it still needs to breathe air to breathe with fat! So it can't dive for too long. And frog larvae breathe with gills! It is possible to dive for a long time. Frogs have to be in the water for their fertility.
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