N2 nitrogen in the air is not useful to plants, it needs to first be “fixed” (converted to usable organic forms). Bacteria in the soil do this and so plants have evolved to just obtain their nitrogen from the soil. They could have probably evolved to do it themselves but there was no need as bacteria already did it.

This only becomes a problem when you want to pack more plants into a smaller section of soil and bacteria cant provide enough nitrogen. For the crop yields we get today we need fertilizers to make up for what the soil bacteria cant do.

Was it from "Veritasium"? If so he explains In the video I think how nitrogen in our atmosphere is diatomic. nitrogen and plants can't absorb this type of nitrogen easily it first needs to be split into single atoms of nitrogen. this process takes energy and with nitrogen it's an extreme amount of energy. Plants depend on microbes and mycelium in the soil to break this nitrogen down into a usable mono form look up nitrogen fixation on "Journey to the microcosmos" to learn more

He didn't watch the documentary "A Knights Tale" Where Count Adhemar states that most kights move their head to avoid debris.

Conversely, an endothermic animal can remain active in a variety of temperatures and also use thermoregulation to fight infection.

But yeah we have very high energy demands and so can't chill as much as ectotherms.

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Thanks, I've learned a lot. A couple of days ago I had a minor accident and took a little "meat crayon" like damage. A hand skin torn to shreds, an elbow looking like a slightly used meat crayon. I'm amazed how fast it healed. It looks like I have some brand new skin. It silly but when I get similar "paint scratches" I wonder if it heals this time or not. Well, I have a couple of permanent scars from various accidents, but I've heard it's only because it wasn't sewn. It healed naturally and deeper cuts left some scars. I never had a muscle or bone damage. I'm too careful for that. From the other hand - I'm always in a hurry and I use various tools a lot, so that accounts for plenty of minor damages. It's good to know it's nothing to worry about.

Because we forgot what life was like when the birth rate was higher.

My dad slept on a cot in his parents room until his oldest brother went off to college. After that he shared a room with two bunk beds with three of his other brothers.

Sometimes and to some people start counting to 5 qnd breathe also can help , we kinda trick our focus on something else more relaxing.

It depends (a little bit) by what you mean by particles but significantly more by what you mean by stacked, and also what material the particles are.

Let me give you an example. A meter stick is a 1-meter tall stack of atoms. Atoms are waaaaaay smaller than microscopic. You can see a meter stick, right? But, if you look end on to a meter stick, you see that it is, maybe an inch wide by a half cm tall. So there are already quintillions of atoms just in every layer of the stack.

So maybe you mean a single particle stacked on another single particle... All the way up to 1 m tall. This would be a very very unstable beam. Like balancing a km long pencil probably. But what kinds of particles. If they are just barely too small to see with the naked eye, then even two of them should become just barely visible.

If instead, they are significantly too small to see with a naked eye, then stacking them 1 wide will never become visible. Our eyes can't distinguish things smaller than a certain visual angle, so if the particle stack itself is smaller than that, we won't see it.

There are some notable curiosities tangentially related. Gold can actually form an opaque layer at only a few atoms thick. That's why gold plating is so useful, and gold leaf exists. It's not a 1 m tall stack, but you could say it's a few nanometers tall if you're looking at thickness, or you could say it's however wide and long the object being played is, but then we're going back to the particles being stacked in two different directions that is now visible because obviously it would be.

Our walls here are usually drywall with supporting wooden studs. The flexure is invisible but easily measured

We have a Walmart I work at on occasion. High ceilings, only thing HVAC pushes around is the air for the coolers (I assume) because during Winter it's like a fucking icebox in there, during summer is great, but no heating what so ever, and no amount of bodies in there seems to warm it up. I was in there yesterday, 51°f outside with overcast skies/rain showers and it felt 40ish inside the building. Might be the huge coolers that are wide open and cranked just to above freezing for beer/produce they use but holy hell it's cold in there.

as'soc'iation football

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If you have population of 1000 with birthrate of 20 per 1000. You get 20 kids.

If you have population of 2000 with birthrate of 16 per 1000. You get 32 kids.

This is just an example, but effectively birthrate can go down while at the same time absolute number of births goes up.

At the same time there is a global trend that populations are concentrating in Urban areas.

For example in the US 80% of the population lives in Urban areas and US Census Bureau only considers 3% of the country's land area Urban.

Also depending on which country you are from immigration can compensate for falling birthrate.

There was a Star Trek TNG episode (Night Terrors ) where this happened (space stuff zapped the crew) and everyone started hallucinating.

Yes?

We do it constantly.

Remember, energy isn’t created or destroyed, just transferred. Gravity is a great way to transfer it, as are other forces.

I get panic attacks when I wake up in the mornings. I will try your advice.

> Taller ceilings help dissipate the heat around the entire building.

Okay, weird question here but does it ever rain indoors due to this? I'm just wondering how you deal with moisture.

We most assuredly can. As a gamer 30fps games can be problematic for me, causing motion sickness and nausea, if theres a lot of action and camera movement. Slower strategy games are fine. 60 fps I can tolerate decently, but may have some issues with fast camera spinning, but typically no nausea. 90fps is where I can spin the camera a lot more without worry of side effects. 120 and I can spin it like crazy and still keep track of targets, read a sign while driving a car in game, etc.

There was an article that fighter jet pilots can see changes around 200hz.
https://www.testufo.com/ is a good comparison to see at least 30 vs 60 as you most likely have a 60hz monitor. Some phones now support 144hz so you may have one and can check there to see the difference.

To add to the other points, here's a visual demonstration of human fluid dynamics. https://www.reddit.com/r/gifs/comments/qp3rsg/fluid_dynamics_of_an_overcrowded_venue/?utm_source=share&utm_medium=android_app&utm_name=androidcss&utm_term=1&utm_content=share_button

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American one. The one played with hands. The real football has been relatively safer for a long time.

Transmissions that have upwards of eight forward gears also help efficiency by keeping the engine in its most efficient rpm range longer.

Waves with both hands while doing a wheelie

You had enough movement to aim your lance. There is also the skill in controlling your horse.