How should I imagine a Jurassic prairie, in terms of the common plants, without major grasses or flowering plants? What would have been the default "ground cover" for such an environ?

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• How should I imagine a Jurassic prairie, in terms of the common plants, without major grasses or flowering plants? What would have been the default "ground cover" for such an environ?
• Are bees the best pollinators? And could other pollinators take their place?
• What prevents power from flowing from my electrical appliances containing a battery, back to the grid?
• When a rocket is about to take of there is always a gas coming out of the rocket before the lift of, why?
• Why do distant lights flicker?
• Do penguins have knees and if yes, can they even use them?
• How do we know the amount of a species in the wild?
• Why doesn’t anybody want to find more stable isotopes of existing elements?
• If a floating object displaces an amount of water equal to its weight, then why would a melting iceberg make the sea level rise?
• Are there wildfires in the Amazon?
• When a large meteor burns up in the atmosphere and leaves a lingering cloud-like trail in the sky- what’s that trail made of?
• Are all solar systems are the product of an earlier star that existed in the same location? What do we know of the star that birthed out solar system, and does it have a name?
• What's the difference between valency and oxidation states?
• Who gets better fuel mileage? Truck driving 5 kms on flat ground at 60 MPH, or same truck driving up and down hills but end at the exact same elevation, same speed and distance.
• In climate science, why is altitude often measured in hPa (pressure) instead of meters?
• Why does taking N-Acetyl Cysteine(NAC) before drinking alcohol protect the liver, but taking it after actually exacerbates the damage done by the alcohol?
• What is the elimination half-life of morphine-3-glucuronide and codeine-6-glucuronide in human subjects?
• From a quantum mechanics perspective, why is a lower energy state more stable?

How should I imagine a Jurassic prairie, in terms of the common plants, without major grasses or flowering plants? What would have been the default "ground cover" for such an environ? Posted: 09 Aug 2019 07:25 PM PDT submitted by /u/CzarRictus [link] [comments]

Are bees the best pollinators? And could other pollinators take their place? Posted: 09 Aug 2019 05:40 PM PDT Why are bees held in much higher esteem than other pollinators? Are they the most efficient pollinators? And if so, what gives them the edge over other pollinators? Additionally, if bees dissapeared today would it be possible for plants to be pollinated just as efficiently if an extant species rose up to fill in the bee's "job"? submitted by /u/DunkeyKunga [link] [comments]

What prevents power from flowing from my electrical appliances containing a battery, back to the grid? Posted: 10 Aug 2019 05:19 AM PDT I know electrical power flows from a higher electrical potential point to a lower one, my question is whether this is the only mechanism that stops my laptop's battery from discharging into the grid or if there are some other mechanisms in place? submitted by /u/elmakabu [link] [comments]

When a rocket is about to take of there is always a gas coming out of the rocket before the lift of, why? Posted: 10 Aug 2019 04:56 AM PDT submitted by /u/MelskiWelski [link] [comments]

Why do distant lights flicker? Posted: 10 Aug 2019 05:31 AM PDT submitted by /u/dobrabitka [link] [comments]

Do penguins have knees and if yes, can they even use them? Posted: 10 Aug 2019 05:26 AM PDT So I had this question because I saw that most penguins basically only have their feet visible but nothing of their legs. So if they have legs, do they even have knees in there or like what? submitted by /u/Nambay [link] [comments]

How do we know the amount of a species in the wild? Posted: 09 Aug 2019 07:16 PM PDT I was watching some videos today on nearly extinct wildlife and as I watched I would hear "There are only around X left in the wild". Now, I know that number isn't precise, per say, but I am curious. How do they go about estimating the amount of a species left out in the wild? submitted by /u/Manic_Writer [link] [comments]

Why doesn’t anybody want to find more stable isotopes of existing elements? Posted: 09 Aug 2019 11:22 AM PDT With all the talk about discovering new elements, other elements are just left behind. Take astatine, for example. While it theoretically has a stable isotope, it's still heavier than any isotope discovered or created. It'll surely be easier to add more neutrons to astatine than try to make element 119 or 120. With the many, possibly unique properties of the those near the end of the periodic table, it seems like a no-brainer to try and look into those as well as discovering new ones. submitted by /u/PixelJack79 [link] [comments]

If a floating object displaces an amount of water equal to its weight, then why would a melting iceberg make the sea level rise? Posted: 10 Aug 2019 02:17 AM PDT If an iceberg melts, wouldn't the volume of water added to the ocean be equal to the volume of water that was already displaced by the iceberg? submitted by /u/_ivanthespacebiker [link] [comments]

Are there wildfires in the Amazon? Posted: 09 Aug 2019 12:02 PM PDT I was just watching this CNN "Connect The World" report/episode, and they were [showing clips of fly over sections of the Amazon rainforest]( Ignoring the source/wording/topic of that show (I am not intending to argue about the source, you'll get the gist of what I'm asking if it's on mute while you're watching). When I was watching that "fly over the rainforest" part, seeing those images, I was expecting it to look a bit more like the BC forests/rainforest, or California's forests, where there's obvious damage to the forest from wildfires, and new fires each year. I am specifically trying to understand why the Amazon doesn't appear to be as affected by fire as the California and BC mountains/forests/rainforests. I tried researching before asking you guys, but all I am able to find is very targeted, specific articles like this one, claiming that Amazon rainforests are earnestly fireproof on their own, but due to human interference they're now catching fire as well. Specific Questions Is this just because there aren't as many people in the Amazon so it's not as common for it to affect populations, and therefore not reported on as frequently? Are all of the wildfires down the West coast of Canada and the US caused by humans, and due to fewer humans residing in the Amazon it's not as common? Is this because of the types of trees that grow on the different climates being more or less resilient to fire? Note/context: I hope this post doesn't come off as obtuse or rude somehow. I don't have any ulterior motive in asking this. I just don't have much knowledge about how the Amazon rainforest functions. When autoplay showed me the CNN "Connect The World" clip the images just caught my attention because they don't look anything like the forests I've visited in person throughout both Canada and the US. I really appreciate if anyone could help explain this for me. Please and thanks in advance!! submitted by /u/justarandomcommenter [link] [comments]

When a large meteor burns up in the atmosphere and leaves a lingering cloud-like trail in the sky- what’s that trail made of? Posted: 09 Aug 2019 04:00 PM PDT submitted by /u/darwinpatrick [link] [comments]

Are all solar systems are the product of an earlier star that existed in the same location? What do we know of the star that birthed out solar system, and does it have a name? Posted: 09 Aug 2019 08:36 AM PDT submitted by /u/pelican_chorus [link] [comments]

What's the difference between valency and oxidation states? Posted: 09 Aug 2019 08:32 AM PDT submitted by /u/Ciltan [link] [comments]

Who gets better fuel mileage? Truck driving 5 kms on flat ground at 60 MPH, or same truck driving up and down hills but end at the exact same elevation, same speed and distance. Posted: 09 Aug 2019 03:17 PM PDT submitted by /u/Ohjay1982 [link] [comments]

In climate science, why is altitude often measured in hPa (pressure) instead of meters? Posted: 09 Aug 2019 01:31 PM PDT e.g. the third plot in this page: https://sites.uci.edu/zlabe/arctic-temperatures/ submitted by /u/coldboat [link] [comments]

Why does taking N-Acetyl Cysteine(NAC) before drinking alcohol protect the liver, but taking it after actually exacerbates the damage done by the alcohol? Posted: 09 Aug 2019 09:07 AM PDT In reference to this study. When taken 30 minutes before ethanol administration, NAC acts as an anti-oxidant, mostly as a glutathione precursor, and mitigates some of the oxidative damage done to liver cells. However, when administered AFTER ethanol administration, they believe it may behave in a pro-oxidant manner and double down on the damage. What would cause this? Is it likely to be dose-dependent? And if this is the case with ethanol, why is it not the case when massive doses of NAC are administered after acetaminophen overdose? After researching as much as I can on the internet, this one study is the only mention I can find of this negative interaction. submitted by /u/Richard_Thrust [link] [comments]

What is the elimination half-life of morphine-3-glucuronide and codeine-6-glucuronide in human subjects? Posted: 09 Aug 2019 12:25 PM PDT The question says it all. I have tried to search on google and in research papers but so far haven't been able to find an answer... so what is the elimination half-life of morphine-3-glucuronide and codeine-6-glucuronide in the human body? Thank you! submitted by /u/Ell2509 [link] [comments]

From a quantum mechanics perspective, why is a lower energy state more stable? Posted: 09 Aug 2019 12:14 PM PDT Hi guys, Thus far my understanding (superficial though) comes from a Q&A from Physics SE in which one user states that 'systems go to lower energy states when they share their energy with some other system' which in-turn has so many degrees of freedom that 'energy is divided into indiscernible small portions.' submitted by /u/Al-Andalusia [link] [comments]

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