/u/Matti_Matti_Matti's posts
Are the lips of the mouth just a highly-agile sphincter? Is there any real difference between the lips and any of the other sphincters in the digestive system?
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Would a core sample of the Earth from a pole to the centre have the same mass as one from the equator?
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Muscles have fast and slow twitch fibres which are more useful for different activities (fast for sprinting, slow for long-distance). Does the brain have fast/slow twitch cells for different types of thinking?
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Is there a recording produced by someone who was tone deaf, but has since learned pitch differentiation, of what music sounded like to them?
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