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March 28, 2017

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what are some conditions on Earth that make it possible to live and survive?

  • science .. urgent - ,

    Just a few for you to ponder. Wouldn't you think the presence of oxygen was a good thing for humans? What about the presence of water? What about temperatures that are moderate (as compared to other planets)? Etc

  • science .. urgent - ,

    the gravitational force, perhaps?

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