oblivious_fireball

oblivious_fireball t1_jedc8ce wrote

You ever zapped yourself on the finger after shuffling around and then touching something metal?

Lightning is basically that except the clouds are your finger and the piece of metal is the earth. One side has built up a charge of electrons that wants to equalize and move out, and when it finds a way to travel and escape, it takes it.

Thunder is caused because lightning heats the air around it to fives times hotter than the surface of the sun in a fraction of a second. Air expands when its heated, so thunder is basically the air violently exploding outwards.

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oblivious_fireball t1_j67d7vd wrote

Because hot air has more energy, the molecules of air are moving more and pushing each other away more, so its less dense. because of this hot air rises above colder air masses somewhat like a bubble rises in water, only much slower.

as you go higher up in the atmosphere, thanks to gravity the air naturally gets less dense. As the air gets less dense the air is allowed to expand out and cool, a process called Adiabatic Cooling. This same principle is why any liquid or gas sprayed out of a compressed canister, like compressed air or a fire extinguisher is cold.

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oblivious_fireball t1_j66koa1 wrote

Its easier to understand if you ever see those cross sections of cadavers, but when you gain body fat, its not just pushing out, its also pushing in, and it adds weight to you. This puts pressure on your organs and your muscles and bones(lungs and heart included) to keep up and support you. Because obesity is often caused by poor eating habits and/or lack of exercise, and your body is now storing a large excess of fat, it tends to go hand in hand with high cholesterol(which can lead to blood clots and heart disease) and high blood sugar(which can lead to diabetes).

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oblivious_fireball t1_j66iy43 wrote

usually seedless plants don't evolve from seed-bearing ones very often, simply because the plant then needs to reproduce through other means like offshoots or broken off pieces rerooting without human help, and most die out faster than these methods occur or can't spread away from the parent easily. One of the only natural cases i can think of is Devil's Ivy which has a genetic defect that prevents it from producing its flowers and therefore seeds. But its a rapidly growing vine that produces a lot of rooting hormone, so it pretty readily spreads and any broken pieces easily root down into new plants.

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oblivious_fireball t1_j21q8kh wrote

your stomach can destroy most, but not all. furthermore, it doesn't always destroy the toxins that these germs produce, either in life or as they die. food poisoning caused by salmonella, botulism, and E Coli are often results of the toxins they leave behind rather than the bacteria themselves.

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oblivious_fireball t1_j1tdj4y wrote

Because it made misinformation or poorly received videos seem better than they are. without a dislike ratio you can't really tell how well it was received by the viewers, only how many positive responses it has, much like other social media platforms.

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oblivious_fireball t1_iy4t6fh wrote

its because the very delicate gills collapse and dry out quickly in air when supported and hydrated by water, and thus the fish effectively suffocates. Its the other side of the coin where we can't breathe underwater because the structures in our lungs are not designed to be able to efficiently take oxygen out of the water that is now surrounding them.

However this depends on the fish in question though. some fish are more hardy and can withstand longer periods outside the water. and some fish have special features that let them partially breath air, such as modifying parts of their digestive tract to function as a lung, using their swim bladder as a modified lung, or developing an entirely separate lung-like organ for use. These fish usually live in areas where water quality can become poor. Surprisingly a large number of popular fish kept in home aquariums have these features, such as Bettas, Gouramis, Plecos, Cory Catfish, Oto Catfish, and Ropefish

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