Do animals that live in an area without a typical day/night cycle (ie, near the poles) still follow a 24 hour sleeping pattern?

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• Do animals that live in an area without a typical day/night cycle (ie, near the poles) still follow a 24 hour sleeping pattern?
• did the Black Plague end because natural selection made human immune systems strong enough to defeat it easily via everyone who couldn't dying off, or is there a different reason?
• How severe of symptoms are animals infected with covid-19, like minks and gorillas, experiencing?
• Does soap break down fungal cells like it does with bacteria and viruses?
• Why does metallicity of a stellar core affect it's ability to form a black hole?
• Is the cross section of a sphere always a circle? Why?
• If you plug a submerged straw with your finger and then lift it from the liquid, a volume of liquid remains in the straw; is there a maximum diameter of cylinder (straw) where this is still possible?
• Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
• Does drinking water close to meal time, before, during or after have any effect in digestion?
• What's COVID-19's R-Value at currently, now that we've got vaccines and a delta variant to consider?
• Geologic units and Geologic formations are the same things?
• ¿How can we know that the angle between the oxygen and hydrogen is 104.5º? Or any other molecule, for that matter.
• How do sperm know to go into the egg?
• Why didn't life in Antarctica adapt to its cold climate?

Do animals that live in an area without a typical day/night cycle (ie, near the poles) still follow a 24 hour sleeping pattern? Posted: 14 Sep 2021 05:03 PM PDT submitted by /u/aaRecessive [link] [comments]

did the Black Plague end because natural selection made human immune systems strong enough to defeat it easily via everyone who couldn't dying off, or is there a different reason? Posted: 15 Sep 2021 12:17 AM PDT Do European immune systems today have a strong ability to fight off black plague? or if not, then how did the plague ever end? submitted by /u/playfulpurchase [link] [comments]

How severe of symptoms are animals infected with covid-19, like minks and gorillas, experiencing? Posted: 15 Sep 2021 02:01 AM PDT I keep hearing about animals contracting the disease, but I don't ever really see a discussion of how it effects those animals in terms of suffering and death. Are they getting as sick as we do? Do they have the virus in them but it doesn't really effect them? submitted by /u/middleupperdog [link] [comments]

Does soap break down fungal cells like it does with bacteria and viruses? Posted: 15 Sep 2021 02:57 AM PDT submitted by /u/mrs_moleman [link] [comments]

Why does metallicity of a stellar core affect it's ability to form a black hole? Posted: 15 Sep 2021 04:39 AM PDT Large stars with high metallicity tend to favor forming neutron stars vs black holes. What mechanism allows high metallicity cores to avoid a black hole fate? submitted by /u/thejeran [link] [comments]

Is the cross section of a sphere always a circle? Why? Posted: 15 Sep 2021 06:48 AM PDT Another way to put it is : can you cut a sphere so that the cross section isn't a circle? Is there a mathematical demonstration that proves this? submitted by /u/SkunkyStoat [link] [comments]

If you plug a submerged straw with your finger and then lift it from the liquid, a volume of liquid remains in the straw; is there a maximum diameter of cylinder (straw) where this is still possible? Posted: 14 Sep 2021 10:24 AM PDT What other limiting factors come into play? submitted by /u/Josephdirte [link] [comments]

Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science Posted: 15 Sep 2021 07:00 AM PDT Welcome to our weekly feature, Ask Anything Wednesday - this week we are focusing on Physics, Astronomy, Earth and Planetary Science Do you have a question within these topics you weren't sure was worth submitting? Is something a bit too speculative for a typical /r/AskScience post? No question is too big or small for AAW. In this thread you can ask any science-related question! Things like: "What would happen if...", "How will the future...", "If all the rules for 'X' were different...", "Why does my...". Asking Questions: Please post your question as a top-level response to this, and our team of panellists will be here to answer and discuss your questions. The other topic areas will appear in future Ask Anything Wednesdays, so if you have other questions not covered by this weeks theme please either hold on to it until those topics come around, or go and post over in our sister subreddit /r/AskScienceDiscussion , where every day is Ask Anything Wednesday! Off-theme questions in this post will be removed to try and keep the thread a manageable size for both our readers and panellists. Answering Questions: Please only answer a posted question if you are an expert in the field. The full guidelines for posting responses in AskScience can be found here. In short, this is a moderated subreddit, and responses which do not meet our quality guidelines will be removed. Remember, peer reviewed sources are always appreciated, and anecdotes are absolutely not appropriate. In general if your answer begins with 'I think', or 'I've heard', then it's not suitable for /r/AskScience. If you would like to become a member of the AskScience panel, please refer to the information provided here. Past AskAnythingWednesday posts can be found here. Ask away! submitted by /u/AutoModerator [link] [comments]

Does drinking water close to meal time, before, during or after have any effect in digestion? Posted: 14 Sep 2021 08:51 AM PDT submitted by /u/mid_nightsun [link] [comments]

What's COVID-19's R-Value at currently, now that we've got vaccines and a delta variant to consider? Posted: 14 Sep 2021 07:36 PM PDT In early-mid 2020, I remember quite a few articles talking about COVID's R-naught value being between 3 and 3.5. Do we have a more up-to-date R-Value for it now? And Would that value differ between vaccinated and invaccinated individuals, or is it solely an aggregate value? submitted by /u/Targren [link] [comments]

Geologic units and Geologic formations are the same things? Posted: 14 Sep 2021 07:23 PM PDT Difference between geologic formations and units ? submitted by /u/guachipuchi [link] [comments]

¿How can we know that the angle between the oxygen and hydrogen is 104.5º? Or any other molecule, for that matter. Posted: 15 Sep 2021 12:44 AM PDT Edit: the angle between oxygen and hydrogen in H2O submitted by /u/jonreto [link] [comments]

How do sperm know to go into the egg? Posted: 13 Sep 2021 07:25 PM PDT If you released sperm in an environment similar to the vagina and let them go, would they try to burrow into anything that seemed egg-like? I know most of them just die but is it just that the egg's the only thing for them to latch onto or is there something that compels them to penetrate? Bonus question- would a human sperm try to fertilize a non-human egg? Thanks! submitted by /u/Lou_Pockets [link] [comments]

Why didn't life in Antarctica adapt to its cold climate? Posted: 13 Sep 2021 05:14 PM PDT Hey! I'm not a paleontologist/biologist, sorry for my ignorance. For what I've read, Antarctica used to support diverse ecosystems full of all kind of flora an fauna, but it all died out when Antarctica became a super cold desert . Why didn't complex multicellular life adapt to those changes? did it try to adapt and failed? Does the fossil record show weird animals that were trying to adapt to the changing climate? I haven't been able to find any information about the flora and fauna of Antarctica while it was in the process of becoming a big chunk of ice submitted by /u/NikolaBlocovich [link] [comments]

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