/u/18boro's posts in /r/askscience

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Is there an explanation for why fish/sharks, ("1st generation" of oceanic animals) evolved a vertical tail, whereas whales ( "2nd generation") evolved a horizontal one?

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If it is the muscles in diaphragm and chest that controls my breathing, how can I choose whether to breathe through my nose or mouth?

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Since gas giants have solid cores, why aren't the cores considered the whole planet and the gas around its atmosphere?

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Are humans affected by earth's magnetism at all?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Is there an explanation for why fish/sharks, ("1st generation" of oceanic animals) evolved a vertical tail, whereas whales ( "2nd generation") evolved a horizontal one?	1
If it is the muscles in diaphragm and chest that controls my breathing, how can I choose whether to breathe through my nose or mouth?	1
Since gas giants have solid cores, why aren't the cores considered the whole planet and the gas around its atmosphere?	1
Are humans affected by earth's magnetism at all?	0