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/u/Hamzaboy's posts in /r/askscience

Could a Solar system or Star exist outside of a galaxy?

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Why did mammals lose the ability to lay eggs?

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I have sand samples from several different deserts. Can I tell the difference between them?

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How big could a planet be before it becomes a star?

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How big does a planet/moon have to be to get an atmosphere?

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Could a star orbit another star?

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Why does water put out fire again?

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The definition of species is often simplified as organisms that can produce fertile offspring through sexual reproduction. How is it defined for organisms that don't reproduce sexually?

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If you put human hair genes into a Chimpanzee, could you get a blonde or red-haired chimpanzee?

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Why are chimpanzees and gorrilas the only primates that knuckle walk? What is the evolutionary benefit for that?

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