Of course it is the earth. The temperature of Mars is high, there is no oxygen, water, food, and the skin is directly exposed to the air, making it unsuitable for humans to live in. Currently only the earth is suitable.
Earth, of course. Mars has high temperature, no oxygen, water, food, and its skin is directly exposed to the air. It is not suitable for human habitation. At present, only the earth is suitable.
Earth, of course. Mars is hot, without oxygen and water, food and skin are directly exposed to the air, which is not suitable for human habitation. Only the earth is suitable at present.