/u/Patchman66's posts in /r/askscience

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Do insects have an immune system? If they don’t, how do they protect themselves from viruses and bacteria?

3938 upvotes

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Chiasmodon, Gulper Eels, and other species of fish that ingest prey larger than themselves are probably more sluggish with the extra weight. How do they escape predators in this engorged state?

1032 upvotes

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Besides Spinosaurus and Carcharodontosaurus, was there any point in history in which two large theropods lived alongside one another?

22 upvotes

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How did rabies come into existence? Did it mutate from a less extreme virus?

14 upvotes

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What determines how long a human can hold their breath for? I don’t understand how I can barely hold my breath for a minute but others can do it for 20+!!!

1 upvotes

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How does mimicry happen within the insect kingdom?

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Why do I hear every year that “the cicadas are returning from their 13/17 year nap?” When is this truly going to happen?, has it already?

1 upvotes

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Why don’t insects fly towards the sun like they do to all different kinds of light emitting objects?

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Why is it that when we drink water it doesn’t “dilute” our stomach acid, and it still digests food just fine?

1 upvotes

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Why do I see so many posts on Reddit of people who get allergy tests and are “allergic to everything”?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Do insects have an immune system? If they don’t, how do they protect themselves from viruses and bacteria?	3938
Chiasmodon, Gulper Eels, and other species of fish that ingest prey larger than themselves are probably more sluggish with the extra weight. How do they escape predators in this engorged state?	1032
Besides Spinosaurus and Carcharodontosaurus, was there any point in history in which two large theropods lived alongside one another?	22
How did rabies come into existence? Did it mutate from a less extreme virus?	14
What determines how long a human can hold their breath for? I don’t understand how I can barely hold my breath for a minute but others can do it for 20+!!!	1
How does mimicry happen within the insect kingdom?	1
Why do I hear every year that “the cicadas are returning from their 13/17 year nap?” When is this truly going to happen?, has it already?	1
Why don’t insects fly towards the sun like they do to all different kinds of light emitting objects?	1
Why is it that when we drink water it doesn’t “dilute” our stomach acid, and it still digests food just fine?	1
Why do I see so many posts on Reddit of people who get allergy tests and are “allergic to everything”?	1