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24-06-2017
Geography

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Explain why liquid water is not stable on mars today, but why we nonetheless think it flowed there in the distant past.

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Ringedfalls Ringedfalls

24-06-2017

Liquid water is not stable on Mars but was stable in the past because Mars' atmosphere was thicker, trapping carbon-dioxide easily, warming the planet, making water stable. But the atmosphere dissolved, making Mars colder, so now liquid water is not stable.

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