In the future, it seems it will be more difficult to live on the Earth. Some people think more money should be spent on researching other planets to live, such as Mars. To what extent do you agree or disagree with this statement?

In the future, it seems it will be more difficult to live on the Earth. Some people think more money should be spent on researching other planets to live, such as Mars. To what extent do you agree or disagree with this statement? When humans become too fragile on Earth, some people believe that due

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