WHY is blood type B-negative the rarest?
The fourth positive type is much more common. The fourth group in general is a mystery, because it came from the fusion of two very different types, A and B. It is a young group, and people with it have a flexible immune system.
This group is unique in that it emerged not because of the influence of the external environment, but as a result of mixed marriages. It is worth mentioning that this group is the most biologically complex.
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Antigens sometimes make it similar to the second, and sometimes even to the third. Occasionally, it also happens that this rare group is something like a combination of both of these groups.
Thus, the fourth blood group is thought to have appeared later than all the others, about a thousand years ago, as a result of the mixing of Mongoloid and Indo-European.
The fourth positive type is much more common. The fourth group in general is a mystery, because it came from the fusion of two very different types, A and B. It is a young group, and people with it have a flexible immune system.
This group is unique in that it emerged not because of the influence of the external environment, but as a result of mixed marriages. It is worth mentioning that this group is the most biologically complex.
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Antigens sometimes make it similar to the second, and sometimes even to the third. Occasionally, it also happens that this rare group is something like a combination of both of these groups.
Thus, the fourth blood group is thought to have appeared later than all the others, about a thousand years ago, as a result of the mixing of Mongoloid and Indo-European.
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WHY is there 12 months in a year?
Cause there are 12 new moons in the year. People used to count time using recurring natural phenomena. A year is the time from one flood to the other. Conversely, a month is the period from new moon to new moon, which is about 29.5 solar days.
➡ About 12 such intervals fit into a year, so 12 months were counted annually.
Cause there are 12 new moons in the year. People used to count time using recurring natural phenomena. A year is the time from one flood to the other. Conversely, a month is the period from new moon to new moon, which is about 29.5 solar days.
➡ About 12 such intervals fit into a year, so 12 months were counted annually.
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WHY do baby teeth fall out?
One important function of deciduous teeth is that they "point" to the molar teeth where they will erupt. If a baby tooth falls out prematurely, the permanent tooth "loses its bearings" and can grow crooked.
By the age of 6-7, these teeth will begin to erupt. This process is accompanied by the resorption of the roots of the baby teeth. This causes the baby teeth to loosen. When the shortened root can no longer hold the baby tooth in the hole, it falls out.
One important function of deciduous teeth is that they "point" to the molar teeth where they will erupt. If a baby tooth falls out prematurely, the permanent tooth "loses its bearings" and can grow crooked.
By the age of 6-7, these teeth will begin to erupt. This process is accompanied by the resorption of the roots of the baby teeth. This causes the baby teeth to loosen. When the shortened root can no longer hold the baby tooth in the hole, it falls out.
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WHY does Asians eat with chopsticks?
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Most likely, it was due to the rapid growth of the country's population: food was in short supply, so the Celestials cut it into small pieces to cook it faster and make it easier to divide among a large group.
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Small sliced food is nothing to cut with a knife, however, handy to take with chopsticks, which in addition are extremely easy to make and cheap, so the innovation quickly spread across the country.
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Most likely, it was due to the rapid growth of the country's population: food was in short supply, so the Celestials cut it into small pieces to cook it faster and make it easier to divide among a large group.
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Small sliced food is nothing to cut with a knife, however, handy to take with chopsticks, which in addition are extremely easy to make and cheap, so the innovation quickly spread across the country.
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WHY is it healthy to cry?
The truth is, crying is not only possible, but necessary. And there are plenty of various reasons for that:
✔️ Most people feel a little better and happier after crying. All accumulated emotions and tension are released.
✔️ Tears cleanse the body of harmful substances from stress. No coincidence, all these fluids have been created to get all the bad stuff out of us. Tears are part of the system. A vital and necessary part.
✔️ Cleaning the nose. Especially relevant when mucus has accumulated in the nose and is making it hard to breathe. No need for medicine when there are tears.
✔️ Interestingly, tears can even lower your blood pressure.
✔️ Cleaning the eyes themselves from bacteria and dust.
The truth is, crying is not only possible, but necessary. And there are plenty of various reasons for that:
✔️ Most people feel a little better and happier after crying. All accumulated emotions and tension are released.
✔️ Tears cleanse the body of harmful substances from stress. No coincidence, all these fluids have been created to get all the bad stuff out of us. Tears are part of the system. A vital and necessary part.
✔️ Cleaning the nose. Especially relevant when mucus has accumulated in the nose and is making it hard to breathe. No need for medicine when there are tears.
✔️ Interestingly, tears can even lower your blood pressure.
✔️ Cleaning the eyes themselves from bacteria and dust.
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WHY are people bad at keeping secrets?
In a social environment, owning secrets gives you an advantage over others.
As it turns out, people cannot handle secrets at all. Psychologist Anita Kelly conducted a survey, and 60% of those polled admitted they gave away secrets entrusted to them to their best friends.
Just tell a person that the information you give them is a secret, to increase the likelihood that they share it with others, since the "secrecy" implies its value in their eyes.
In a social environment, owning secrets gives you an advantage over others.
As it turns out, people cannot handle secrets at all. Psychologist Anita Kelly conducted a survey, and 60% of those polled admitted they gave away secrets entrusted to them to their best friends.
Just tell a person that the information you give them is a secret, to increase the likelihood that they share it with others, since the "secrecy" implies its value in their eyes.
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WHY do whales blow fountains of water into the air?
A whale has one or two nostrils, or blowholes, located on the upper surface of the head closer to the back (toothed whales have one blowhole, smooth whales have two). Whales can only breathe through their blowholes, which are directly connected to their lungs. Their mouth is only part of the digestive system.
The blowholes have valves that close when the whale dives to depth. A whale can dive into the ocean to a depth of 2 kilometers and stay underwater for more than an hour. When the whale returns to the surface, it releases a fountain, blowing warm, moist air from its lungs through the blowhole before taking another breath. Water that has accumulated at the top of the blowhole escapes with the air.
Fountains ejected by large whales can sometimes be seen several kilometers away. You can often tell the species of whale by the shape of the fountain.
A whale has one or two nostrils, or blowholes, located on the upper surface of the head closer to the back (toothed whales have one blowhole, smooth whales have two). Whales can only breathe through their blowholes, which are directly connected to their lungs. Their mouth is only part of the digestive system.
The blowholes have valves that close when the whale dives to depth. A whale can dive into the ocean to a depth of 2 kilometers and stay underwater for more than an hour. When the whale returns to the surface, it releases a fountain, blowing warm, moist air from its lungs through the blowhole before taking another breath. Water that has accumulated at the top of the blowhole escapes with the air.
Fountains ejected by large whales can sometimes be seen several kilometers away. You can often tell the species of whale by the shape of the fountain.
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WHY don't snakes blink?
Some people mistakenly answer this question: "Because snakes don't have eyelids". That's not true. Snakes do have eyelids. But they are transparent and fused together. The thin transparent skin that protects the eyes, when molting, comes off with the skin of the snake as a single mass. But if a snake's eyelids were ordinary, it would complicate the molting process considerably.
Thus, snakes sleep with their eyes open because they cannot close them due to their physiology.
When the molt is near, the film obscures the eyes and the vision is severely impaired, but after the skin slides off, it improves again.
Some people mistakenly answer this question: "Because snakes don't have eyelids". That's not true. Snakes do have eyelids. But they are transparent and fused together. The thin transparent skin that protects the eyes, when molting, comes off with the skin of the snake as a single mass. But if a snake's eyelids were ordinary, it would complicate the molting process considerably.
Thus, snakes sleep with their eyes open because they cannot close them due to their physiology.
When the molt is near, the film obscures the eyes and the vision is severely impaired, but after the skin slides off, it improves again.
WHY does coffee make us sleepy?
Coffee contains two natural organic substances, the alkaloids caffeine and theobromine, both of which have different effects on the central nervous system. First, after you drink a cup of coffee, caffeine begins to act, having a bright and invigorating effect on the body, expanding the blood vessels.
But just 20-25 minutes after the caffeine comes the theobromine, also in its own way useful alkaloid, which relaxes the body, has a positive effect on the cognitive abilities and even improves the mood. Only if your body isn't exhausted by endless sleepless nights and doesn't need a quality rest. Otherwise, you are very likely to want to sleep.
Some experts say that if exactly 20 minutes after a cup of coffee to drink a glass of water, you can neutralize this effect by restoring the water-salt balance.
Coffee contains two natural organic substances, the alkaloids caffeine and theobromine, both of which have different effects on the central nervous system. First, after you drink a cup of coffee, caffeine begins to act, having a bright and invigorating effect on the body, expanding the blood vessels.
But just 20-25 minutes after the caffeine comes the theobromine, also in its own way useful alkaloid, which relaxes the body, has a positive effect on the cognitive abilities and even improves the mood. Only if your body isn't exhausted by endless sleepless nights and doesn't need a quality rest. Otherwise, you are very likely to want to sleep.
Some experts say that if exactly 20 minutes after a cup of coffee to drink a glass of water, you can neutralize this effect by restoring the water-salt balance.
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WHY does a train back up before moving forward?
If the driver of a heavy freight train tries to move it sharply forward, the train may not move at all, because the total frictional force of the railroad tracks acting on the wheels of the cars will exceed the sliding force of the locomotive's driving wheels.
Frequently, the driver must first reverse in order to loosen the couplings. And only then drive forward, propelling the cars one by one.
If the driver of a heavy freight train tries to move it sharply forward, the train may not move at all, because the total frictional force of the railroad tracks acting on the wheels of the cars will exceed the sliding force of the locomotive's driving wheels.
Frequently, the driver must first reverse in order to loosen the couplings. And only then drive forward, propelling the cars one by one.
Why can't you create a folder named 'con' in Windows?
In Windows, you cannot normally create a folder named 'con'. Numerous web sites claim that it is the personal wish of Bill Gates, who was teased with this word as a child (which supposedly means "nerd").
In fact, it's much simpler than that. It turns out that when Bill was designing MS-DOS, he had prescribed folders in the file system that can only be created once and they are used for the needs of the system itself. So, besides the CON folder you can't write many other names like PRN, NUL, AUX, LPT0, LPT1, COM1, COM2 and so on.
In Windows, you cannot normally create a folder named 'con'. Numerous web sites claim that it is the personal wish of Bill Gates, who was teased with this word as a child (which supposedly means "nerd").
In fact, it's much simpler than that. It turns out that when Bill was designing MS-DOS, he had prescribed folders in the file system that can only be created once and they are used for the needs of the system itself. So, besides the CON folder you can't write many other names like PRN, NUL, AUX, LPT0, LPT1, COM1, COM2 and so on.
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WHY is the saxophone called that?
The Belgian master Adolphe Sax, who invented the saxophone, originally called it something completely different - the mouthpiece ophicleide.
Only two years later, his friend, the composer Berlioz, called the new instrument the saxophone in a magazine article, and that name caught on much better.
The Belgian master Adolphe Sax, who invented the saxophone, originally called it something completely different - the mouthpiece ophicleide.
Only two years later, his friend, the composer Berlioz, called the new instrument the saxophone in a magazine article, and that name caught on much better.
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WHY do we feel frustrated in the fall?
With the onset of autumn, our body begins to save energy. This is primarily due to the natural mechanisms of adaptation to new temperature conditions. The body begins to consume less energy to prepare for a difficult winter period. As a rule, this is expressed in increased appetite, sleepiness, which is an absolutely normal reaction of the body.
The colder it is outside and the more fallen leaves appear underfoot, the more homesick the person feels. The transition from golden and warm autumn to dank and gray can be a turning point in the emotional state. Autumn moping is comparable to acclimatization.
Remember, at the first -5 degrees in winter we quickly freeze, the wind seems icy. But in two weeks, at the same temperature, you can enjoy a walk in the fresh air.
Physical activity, a balanced diet and vitamins improve health.
With the onset of autumn, our body begins to save energy. This is primarily due to the natural mechanisms of adaptation to new temperature conditions. The body begins to consume less energy to prepare for a difficult winter period. As a rule, this is expressed in increased appetite, sleepiness, which is an absolutely normal reaction of the body.
The colder it is outside and the more fallen leaves appear underfoot, the more homesick the person feels. The transition from golden and warm autumn to dank and gray can be a turning point in the emotional state. Autumn moping is comparable to acclimatization.
Remember, at the first -5 degrees in winter we quickly freeze, the wind seems icy. But in two weeks, at the same temperature, you can enjoy a walk in the fresh air.
Physical activity, a balanced diet and vitamins improve health.
WHY do people in Japan enjoy eating maple leaves?
In some regions of Japan, deep-fried maple leaves are a popular snack. The leaves are harvested, then aged for about a year in salt barrels, and then coated in a special sweet dough and deep fried in oil.
Snack makers assure us that the most appropriate thing to do when eating maple leaves is to admire the autumn colors of Japanese nature.
In some regions of Japan, deep-fried maple leaves are a popular snack. The leaves are harvested, then aged for about a year in salt barrels, and then coated in a special sweet dough and deep fried in oil.
Snack makers assure us that the most appropriate thing to do when eating maple leaves is to admire the autumn colors of Japanese nature.
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WHY is water in the oceans and seas salty while fresh in rivers?
Most of the salts in seawater were formed at the beginning of geologic history, at the origin of the oceans. Volcanic gases present in the atmosphere reacted with water to form acids. These reacted with the metal silicates in the rocks of the ocean floor, producing salts. Some more salts were brought to the seas by the rivers, which washed them out of the minerals of the land. The river water that enters the sea evaporates and the salts accumulate.
The water in rivers is normally fresh since they are fed by precipitation, which does not contain salt, and they flow in channels that have long since been washed away. Yet in some arid mountainous areas (e.g., the Kopetdag), saline rivers do exist.
Most of the salts in seawater were formed at the beginning of geologic history, at the origin of the oceans. Volcanic gases present in the atmosphere reacted with water to form acids. These reacted with the metal silicates in the rocks of the ocean floor, producing salts. Some more salts were brought to the seas by the rivers, which washed them out of the minerals of the land. The river water that enters the sea evaporates and the salts accumulate.
The water in rivers is normally fresh since they are fed by precipitation, which does not contain salt, and they flow in channels that have long since been washed away. Yet in some arid mountainous areas (e.g., the Kopetdag), saline rivers do exist.
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WHY can poor weather affect your Internet connection?
Rain can cause physical damage to cables, especially where telecommunications networks are of old infrastructure. Although most people are already connected to broadband, some parts of the network may run on old telephone lines that are vulnerable to damage.
Most Internet cables lie underground. In the event of a flood, water can get into the cables or their connectors. This can significantly reduce speeds or even block it completely, reducing bandwidth or causing short circuits. But it can affect more than just home communications. Wireless networks outside homes or buildings can be affected by rainfall: water droplets can partially absorb the signal, causing the coverage area to drop.
Even when the rain stops, the effect can still be felt. High humidity, which remains in the air for a long time, can slow down Internet connections.
Rain can cause physical damage to cables, especially where telecommunications networks are of old infrastructure. Although most people are already connected to broadband, some parts of the network may run on old telephone lines that are vulnerable to damage.
Most Internet cables lie underground. In the event of a flood, water can get into the cables or their connectors. This can significantly reduce speeds or even block it completely, reducing bandwidth or causing short circuits. But it can affect more than just home communications. Wireless networks outside homes or buildings can be affected by rainfall: water droplets can partially absorb the signal, causing the coverage area to drop.
Even when the rain stops, the effect can still be felt. High humidity, which remains in the air for a long time, can slow down Internet connections.
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WHY can't we see stars from space orbit?
They are visible unless interfered by sunlight. When objects illuminated by the Sun are in the observer's or camera's field of view, the eye or camera adapts to these bright sources and the other luminaries become invisible.
But when the space station flies from the night side of the Earth, the stars are clearly visible to the naked eye.
They are visible unless interfered by sunlight. When objects illuminated by the Sun are in the observer's or camera's field of view, the eye or camera adapts to these bright sources and the other luminaries become invisible.
But when the space station flies from the night side of the Earth, the stars are clearly visible to the naked eye.
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WHY do nettles burn?
Its stem and leaves are covered with thin, hardly visible to the eye, very sharp villi that easily pierce the skin and break and remain in it.
The villi contain a sap composed of formic acid, histamine and vitamin B4. When the villi enter the skin, the juice leaks under the skin and causes a burning sensation in the punctured area.
Its stem and leaves are covered with thin, hardly visible to the eye, very sharp villi that easily pierce the skin and break and remain in it.
The villi contain a sap composed of formic acid, histamine and vitamin B4. When the villi enter the skin, the juice leaks under the skin and causes a burning sensation in the punctured area.
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Lotus is about to release its first NFT collection
British carmaker Lotus is partnering with Web3 Ripple and NFT PRO to enter the world of NFT. Here, the former will provide technical support for minting digital assets on the ultra-fast, low-cost and carbon-neutral XRP Ledger (XRPL) blockchain.
The project, called the 01L Collection, will be launched in several phases, the first of which will be the release of the first collection of rare NFT Lotus. The collection includes five different assets, each of which is a dynamic and animated image of a Lotus badge with a different color background. Each design has been developed by the car company's in-house design team to ensure that the innovative spirit of Lotus is fully embodied in each NFT.
British carmaker Lotus is partnering with Web3 Ripple and NFT PRO to enter the world of NFT. Here, the former will provide technical support for minting digital assets on the ultra-fast, low-cost and carbon-neutral XRP Ledger (XRPL) blockchain.
The project, called the 01L Collection, will be launched in several phases, the first of which will be the release of the first collection of rare NFT Lotus. The collection includes five different assets, each of which is a dynamic and animated image of a Lotus badge with a different color background. Each design has been developed by the car company's in-house design team to ensure that the innovative spirit of Lotus is fully embodied in each NFT.
WHY did the church conclude that the fork was a tool of the devil?
At one point, Christian theologians in Europe declared that the fork was "Satan's fork".
Perhaps it was the medieval denial of all things ancient. Since the culture of ancient Greece was based on belief in multiple gods, Christian preachers saw the cutlery as a mini-trident of Poseidon, god of the sea.
For centuries, the Catholic Church did not allow the use of a fork. When the French queen Jeanne d'Herve, who treasured her only fork, died of the plague in the fourteenth century, churchmen called her demise payback for her reckless fondness for the devil's object.
Only by the 16th century did the fork overcome Catholic prejudice. And in 1630 Governor Winthrop of Massachusetts had the first and only fork in colonial America.
At one point, Christian theologians in Europe declared that the fork was "Satan's fork".
Perhaps it was the medieval denial of all things ancient. Since the culture of ancient Greece was based on belief in multiple gods, Christian preachers saw the cutlery as a mini-trident of Poseidon, god of the sea.
For centuries, the Catholic Church did not allow the use of a fork. When the French queen Jeanne d'Herve, who treasured her only fork, died of the plague in the fourteenth century, churchmen called her demise payback for her reckless fondness for the devil's object.
Only by the 16th century did the fork overcome Catholic prejudice. And in 1630 Governor Winthrop of Massachusetts had the first and only fork in colonial America.