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Why do humans have finger/toenails?
  • Same reasons monkeys have them; it helps with grabbing on to branches. The stiffness of the nail results in an increased grip strength, because the forces are blocked.

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    NCD, what's this for? (Wrong answers only)
  • ( David Attenborough voice) After the passenger jet has migrated to its fertility grounds it is ready to give birth. Unlike human babys, the passenger jet leaves the mother sideways. This way it can gather some draft before its heavy seat area touches the air. At this point, The mother needs to hover near enough to the Earth's surface not to endanger the newborn fall, as it's propellers are far from fully developed and can't sustain proper flight yet.

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