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

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Why are there relatively fewer types and total biomass of shellfish - both athro and gastro - in freshwater as opposed to saltwater?

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Were the huge flocks of passenger pigeons "natural" or an aberration resulting from the deaths of their Native American predators?

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Are there any cephalopods that can tolerate brackish - or fresh - water? If not, what kept them from exploiting that niche?

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Was there any reason that birds - as opposed to mammals - became the large apex predator in South America during the Pleistocene? How do the giant birds of Australia/the Pacific fit into this?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Why are there relatively fewer types and total biomass of shellfish - both athro and gastro - in freshwater as opposed to saltwater?	1
Were the huge flocks of passenger pigeons "natural" or an aberration resulting from the deaths of their Native American predators?	1
Are there any cephalopods that can tolerate brackish - or fresh - water? If not, what kept them from exploiting that niche?	1
Was there any reason that birds - as opposed to mammals - became the large apex predator in South America during the Pleistocene? How do the giant birds of Australia/the Pacific fit into this?	1