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

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What is finger pulp or ungual pulp?

8 upvotes

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Are most organic solutions acidic or alkaline? Similarly, do most organisms prefer acidic or alkaline environments?

7 upvotes

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If the crown mammals evolved in the late Jurassic, when Laurasia and Gondwana had already separated... how had mammals spread throughout the world already by the K-T event, and diversify only afterward?

7 upvotes

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How much of an effect does gravity have on weather?

7 upvotes

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The existence of ancient continents, mountain ranges, glaciers, and such can be determined--what about rivers? What is the oldest river of which we have evidence for its existence?

6 upvotes

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Can tendons grow and become stronger like muscles through continued use?

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Why did the upright-standing crocodilians and crocodile-line archosaurs die out? What advantages did sprawling stance have? Was it better for swimming?

5 upvotes

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Why are macroscopic objects so much more colorful than microscopic objects? (Why are pigments so "effective"?)

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Is it possible to have multiple infections that weaken each other until the immune system can eliminate them?

4 upvotes

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If the Earth's atmosphere was 100% oxygen, but only 21% as dense, would it be breathable?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
What is finger pulp or ungual pulp?	8
Are most organic solutions acidic or alkaline? Similarly, do most organisms prefer acidic or alkaline environments?	7
If the crown mammals evolved in the late Jurassic, when Laurasia and Gondwana had already separated... how had mammals spread throughout the world already by the K-T event, and diversify only afterward?	7
How much of an effect does gravity have on weather?	7
The existence of ancient continents, mountain ranges, glaciers, and such can be determined--what about rivers? What is the oldest river of which we have evidence for its existence?	6
Can tendons grow and become stronger like muscles through continued use?	6
Why did the upright-standing crocodilians and crocodile-line archosaurs die out? What advantages did sprawling stance have? Was it better for swimming?	5
Why are macroscopic objects so much more colorful than microscopic objects? (Why are pigments so "effective"?)	5
Is it possible to have multiple infections that weaken each other until the immune system can eliminate them?	4
If the Earth's atmosphere was 100% oxygen, but only 21% as dense, would it be breathable?	4