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A furnace.
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But the earth had an exceptional future,
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Offered to it by water.
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At the right distance from the sun,
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not too far, not too near.
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The earth was able to conserve water in liquid form.
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Water vapor condensed
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And fell into torrential downpours on earth,
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And rivers appeared.
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The rivers shaped the surface of the earth,
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Cutting their channels,
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Furrowing out valleys.