/u/no_ur_cool's posts in /r/askscience
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At what point of dinosaurs evolving into birds did cold-bloodedness evolve? Also, why would it happen?
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A cyclist rides straight for one kilometre. The same cyclist then rides up and down a hill exactly half a kilometre each way. Assuming all other conditions are equal, which route would be faster? Would they be the same?
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A cyclist rides straight for one kilometre. The same cyclist then rides up and down a hill exactly half a kilometre each way. Assuming all other conditions are equal, which route would be faster? Would they be the same?
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