Which planet is suitable for human habitation?

At present, only the earth is suitable for human habitation. Because there is an environment suitable for human survival on earth.

The origin of life evolution:

The earth provides the only environment that can sustain the evolution of known life. It is believed that high-energy chemical reactions about 4 billion years ago produced self-replicating molecules, and after 500 million years, the same ancestor of all life appeared, and then differentiated into bacteria and archaea. Early life forms developed the ability of photosynthesis, which can directly use solar energy and release oxygen into the atmosphere.

Climate:

The earth's atmosphere has no clear boundaries. The farther away from the surface, the thinner the air, and finally disappeared into outer space. Three quarters of the air quality is concentrated in the troposphere 1 1 km above the surface.

The energy from the sun heats the gas on the surface and in the troposphere above. The air expands due to the heat, rises due to the decrease of density, and the surrounding cooler and denser gas is filled, forming an atmospheric circulation. This redistributes heat and produces various weather phenomena and climatic conditions.

Above content reference: Baidu Encyclopedia-Earth