/r/askscience
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Does life still arise from inorganic materials, or was it a one time event in the past of the Earth?
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When a person suffers a severe case of amnesia, will they have interests in the same things that they had before their amnesia?
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Normally in the body fluids and minerals in those fluids flow from areas of high concentration to low concentration. However the kidneys are able to remove minerals/toxins from your blood and concentrate them into urine which is much more concentrated. How does it do this?
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