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

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Two questions: 1. Are STDs located more in the sperm or seminal fluid. 2. If you put a person (naked with no breaks in their skin) in a room and filled it with aerosolized STD+ semen would they become infected?

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Why do humans make noises when injured? Does this trait exist throughout life in individuals who were born deaf, if so why?

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Why do small children love/seek out sweet things like candy so intently? Is there a(n) anatomical, physiological, or evolutionary reason for it?

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How do soft tissues like the human penis know what size to grow to and when to stop growing?

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What are the mechanisms involved in determining adult penis size in humans?

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Does Marijuana help people with macular degeneration? If it does, how does it help them?

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[Botany] I have noticed a wide variety of kinds and shapes of bark with some trees being smooth and others having irregular surfaces with deep grooves. Is there an evolutionary/biological benefit to bark shape?

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If a small object like a cat was floating in space and we gave it suddenly enough mass that it had the gravity of a very large black hole would its speed change relative to a second object outside of its gravity well?

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Have humans evolved anything that helps them drink alcohol better than other animals of similar size?

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If you had 2 people, one on an infinitely large perfectly flat plane and one on a "flat" area of Earth like Kansas, how would the horizon and viewable distance be different if each rose 1000m in the air?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Two questions: 1. Are STDs located more in the sperm or seminal fluid. 2. If you put a person (naked with no breaks in their skin) in a room and filled it with aerosolized STD+ semen would they become infected?	1
Why do humans make noises when injured? Does this trait exist throughout life in individuals who were born deaf, if so why?	1
Why do small children love/seek out sweet things like candy so intently? Is there a(n) anatomical, physiological, or evolutionary reason for it?	1
How do soft tissues like the human penis know what size to grow to and when to stop growing?	1
What are the mechanisms involved in determining adult penis size in humans?	1
Does Marijuana help people with macular degeneration? If it does, how does it help them?	1
[Botany] I have noticed a wide variety of kinds and shapes of bark with some trees being smooth and others having irregular surfaces with deep grooves. Is there an evolutionary/biological benefit to bark shape?	1
If a small object like a cat was floating in space and we gave it suddenly enough mass that it had the gravity of a very large black hole would its speed change relative to a second object outside of its gravity well?	1
Have humans evolved anything that helps them drink alcohol better than other animals of similar size?	1
If you had 2 people, one on an infinitely large perfectly flat plane and one on a "flat" area of Earth like Kansas, how would the horizon and viewable distance be different if each rose 1000m in the air?	1