Why do people say that besides the earth, Mars is the most suitable place for people to live?

Mars has many characteristics similar to that of the earth. It is 227.94 million kilometers away from the sun, about 1.5 times the distance between the sun and the earth. The angle between the rotation axis and the orbital plane is 24, which changes all the year round like the earth. It is less than half the rotation of the earth, that is, 24 hours, 37 minutes and 22.6 seconds. Therefore, the length of day and night of Mars and the Earth is similar, but the period of revolution around the sun is almost equal to two years of the Earth. Because Mars is far from the sun, its period of revolution is 687 days. Mars is about half the diameter of the earth; 1∕ 6 smaller than the earth; The mass is only110 of the earth; The atmosphere of Mars is much thinner than that of the earth. Its main component is carbon dioxide, accounting for 95%, and there is a very small amount of oxygen and water. Mars is rich in resources, which can not only provide us with raw materials necessary for life, but also provide us with materials for the development of scientific and technological civilization. There is a frozen ocean in the soil of Mars. There are a lot of carbon, hydrogen, oxygen and nitrogen, all of which are waiting for human development and utilization. These four elements are not only the basic elements of food and water, but also the important raw materials of plastics, wood, paper and clothes. More importantly, they are also important components of rocket fuel. Moreover, Mars has experienced volcanic and hydrological movements similar to those of the Earth, which have produced a lot of minerals on the Earth, and so must Mars. Everything is born and dies, and the sun will "end" life in 5 billion years. With the deepening of Mars exploration activities, the mysterious veil of Mars will be slowly unveiled, and it is possible to immigrate to Mars in the future. Whether the earth really moves from Venus to Mars or not, the most important thing at present is to cherish the earth, our home.

Reference: Yahoo Knowledge

Because Mars has the same atmosphere as the Earth.

Can protect the above creatures from direct sunlight; And mountains.

sea

... the environment is the closest to the earth