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There is indeed a lot of knowledge on the Internet, but there is a large part of the knowledge is useless knowledge, that is, it seems to be useful, but in fact it has nothing to do with your life at all, for example, you are a normal financial management person, and then you read some things about mechanical drawing, which are written in great detail, ah, it is indeed very easy to understand, but this thing is useless, you will not use it in the future, and how to learn to filter useful information from the Internet is very important, Too much information on the Internet can cause information loss, so it is very important to know how to use the Internet correctly to help you better search for information and reduce wasted time.
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The Internet is indeed an endless ocean of knowledge, and it is best for human beings to learn to classify knowledge when they grasp it.
Because I will check on the Internet whenever I encounter something, but I also need to learn to distinguish because the knowledge on the Internet is not all correct, so I must be cautious about learning knowledge.
When learning knowledge, we must insist on learning every day, and don't think about "eating a big fat man in one bite", which will affect the efficiency of mastering knowledge.
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The disadvantage of today's information age is that information is too fragmented and too much information, so that people don't know what is useful and what is not.
If you want to digest information reasonably, you still have to learn to classify information, such as some entertainment gossip information, then just look at it yourself, you don't have to keep it in mind, and some information that is important to you, such as related to your own work and your life, focus on remembering.
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1. Selective receiving, not all things on the Internet are true, you have to learn to judge and choose what you need.
2. When you don't understand, you can check online, broaden your horizons, and answer your questions.
3. Take time and digest it slowly, the amount of information is too large, it is impossible to receive it in a short time, and you can only take your spare time to enrich your knowledge.
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Although there is a lot of knowledge, it does not mean that you need to master all the existing knowledge in order to continue research in a certain field. Nowadays, the subject classification is very fine, as long as you master the content related to the subject, it is enough, and the rest can be gradually increased according to the needs, and gradually learned, with the previous foundation, it is easier to learn the knowledge on top of it. So there is no need to worry about the subject's question at all.
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The knowledge on the Internet can be called a vast sea, a person can not fully digest it in his life, and the amount of knowledge is still doubling at a shorter and shorter rate. Therefore, everyone only learns the knowledge that is useful to themselves, learn to do subtraction, don't be greedy and greedy, everyone can be proficient in part of the knowledge on the Internet that can be digested.
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As the saying goes, "Live to be old, learn to be old". Nowadays, the Internet is so developed, there is so much knowledge that can be used to learn online.
It's impossible to say that you have learned it all over the world. You can search for a lot of aspects that you are particularly interested in on the Internet, you can use your spare time to watch online tutorials, the sun and the moon accumulate, I believe you will learn a lot of knowledge.
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In fact, I think that we can't blindly believe in these things, we still have to have our own opinions and judgments, learn to screen, have our own ideas, and choose what we need. After choosing, we need to digest it slowly and carefully. It cannot be completely denied, nor can it be accepted in its entirety.
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Although there is a lot of knowledge on the Internet, it is not necessary to digest it all, you have to find nutritious ones to digest, you have to find what you are interested in to digest, learn to choose, don't read everything, this not only can not be digested, but also reduce efficiency and waste time, so you have to choose.
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In the Internet, human reading is actually very narrow, and people in the art industry or who like art will basically only look at the knowledge of art on the Internet, and the same is true for other industries.
And now the Internet is getting smarter and smarter, often what we like to watch, the Internet will recommend.
This will allow us to see only a small part of the knowledge and information that we are interested in or need on the Internet, and we will only digest this kind of knowledge.
The vast majority of knowledge is not accessible at all.
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Xu Senxiang returned to many people who believe that science is far away from real life and cannot be accessed from it. In fact,Many of the little things in our lives are designed to be scientific。For example, why do herbivores have stomachs that are so much stronger than human stomachs?
People can't eat grass for as long as herbivores?
Why can't humans eat grass for long periods of time? In fact, humans can eat some plants. The reason why they can't eat plants for a long time is that the human stomach can't digest plants well.
Taking cattle as an example, we know that the stomach of a cow is divided into four parts: rumen, reticulum, valve, and wrinkled. BecauseCattle are the stomachs of ruminants, and it differs from humans in digesting food
They rarely chew and swallow their food slowly, but swallow it casually and store it in the rumen. The rumen is the most hungry stomach in the cow's stomach, accounting for 80% of the total stomach. There are many microorganisms in the rumen.
The enzymes produced by microorganisms digest the plant, produce lower fatty acids, and are absorbed by the rumen. These foods, which are digested in the rumen, are regurgitated back into the mouth and chewed again when the cattle are free. After the food has been chewed thoroughly, it will pass through the rumen and reticular tissue into the flap stomach (i.e., belly).
A slapped stomach will grind the food into a better food ingredient and continue to digest.
On the contrary, humans do not eat grass for a long time because the digestive system of humans is the stomach, colon, and rectum。These digestive systems are unable to digest fiber, some phenols, and various nutrients from plants. Therefore, the nutrients extracted from plants cannot fully meet the needs of human life.
In addition, there is no microorganism in the human body like cattle that can separate proteins from plants, and protein is the basic energy for human life activities. Therefore, humans cannot eat grass for as long as they do herbivorous animals. People who have been vegetarian for a long time are actually supplementing their protein with milk and eggs.
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Because animals usually eat everything, and they don't pretentious.
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Maybe it's because the stomachs of these animals are relatively pure.
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Because the human stomach is sterilized or something when eating, but this is not the case with herbivores.
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Because they eat directly, the stomach naturally has to bear a lot.
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There may not be a definitive answer to this one.
Let's show you a sohu community discussion.
A lot of people are talking about it.
Personally, I think so.
Because human life has lost its natural selection, coupled with a lot of loving activities, many weak people who are not adapted to survive have survived and are reproducing.
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Where there is degradation, there is evolution, and all human physiological systems will change alternately in evolution and degradation! As food changes, the adaptability of the digestive system inevitably changes. But whether it will degenerate or evolve is still unpredictable.
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No, otherwise people will be killed by Russia, and they will not be nourished. Unless it's better evolved!
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No, people are very adaptable.
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I think so, I'm obviously eating less now. Digestive function is still not good.
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It is possible and it is not possible.
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People are very adaptable.
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In 1752, the Italian scientist Lemo was doing his experiments all day. The old scholar was preoccupied with the recipes of the harrier, a bird of prey that devours small birds and has a strange habit of spitting out what it eats and does not digest.
Lemo put a piece of dried sponge into a metal container drilled with many small holes and forced the harrier to swallow it. Of course, it won't be long before the harrier spits out the metal container.
Lemo opened the container and found that the sponge was damp and 5 times heavier. He squeezed the juice out of the sponge into a cup, licked it with his tongue and tested it with a chemical agent, all of which proved that the juice was acidic. Put meat or bones in it, and some of it can be dissolved.
Well, it seems that the digestion of food in the stomach is related to this acidic juice. Lemo said with a clatter.
It took another 100 years for chemists to figure out that the acidic juice in Lemo's stomach was highly corrosive hydrochloric acid. The main component of gastric juice is hydrochloric acid, although the concentration of hydrochloric acid in gastric juice is only five thousandths of the standard hydrochloric acid, it can still be regarded as the most acidic liquid in the human body. In addition to dissolving food, gastric acid can also kill bacteria entering the stomach and promote the absorption of iron, and it can promote the secretion of intestinal juice and pancreatic juice after it reaches the small intestine, and promote nutrient absorption.
In addition, gastric acid can also promote the production of enzymes, and the stomach can digest food, mainly relying on enzymes.
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When there is a rush between characters and characters.
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There is a TV film called "The World After the Disappearance of Mankind", which tells the story of the gradual change of the earth without humans.
After the disappearance of humanity, the forces of nature regained their magical powers. And that's how it turned out: everything returned to the most primitive form of nature.
Within 100-300 years, all modern buildings will collapse, including the Brooklyn Bridge, the Eiffel Tower, and more. Vegetation and natural ecology will regain everything. Without the massive fishing and dumping of garbage, the ocean's revival would have been much faster.
500 years after the disappearance of humans: all modern man-made structures will disappear and nature will once again dominate the planet.
50 million years after the disappearance of humanity: plastic bottles and some glass bottle fragments will become the last evidence that human civilization once existed. In 100 million years, even these plastics and glass will be gone.
If a new intelligent creature appears on Earth after 300 million, they will face a completely new Earth, and they will not even realize that there was once a human civilization on Earth.
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Humanity is gone, why do you still bother so much.
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You can't ask that question, the food that people digest is used by the cells of the body, any organ.
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It is the stomach that digests it, and it absorbs the liver.
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It is mainly indole, skatosin, and hydrogen sulfide produced by microorganisms and bacteria metabolism.
Formation process: Food is digested in the stomach and intestines, mainly by various digestive enzymes. The colon does not produce enzymes, only bacteria play a digestive role. There are many types of bacteria in the colon, Escherichia coli 70%, anaerobic bacilli 20%, streptococcus, proteus, staphylococcus, lactobacillus, spores, and yeast.
There are also very few protozoa and spirochetes. The important role of intestinal bacteria is to produce substances that are physiologically needed, such as vitamin K, vitamin B1, B2, vitamin H, vitamin B12, B6, enricic acid, folic acid and racemic pantothenic acid can be synthesized in the intestine when food is deficient in vitamins. It can also produce indole, skatin, hydrogen sulfide to make the feces smelly.
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Skatosin.
High-Tech Toilet Test Ground, California, USA.
There are 25,000 toilet flush test systems, each toilet is filled with moldy rice, added to skanin, simulating fecal odor, used to test the efficacy of various toilet deodorants, here 250,000 liters of water are circulated a day, and each product is tested 400 times;
The strongest toilet deodorant ever produced by Thinkson on the National Geographic Channel.
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Indole, skatin, and hydrogen sulfide make the feces smelly.
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The digestive system is one of the most important organ systems in the human body, and the digestive tract, as the most important component of the digestive system, plays an extremely important role in food digestion, nutrient absorption, waste excretion, resistance to microbial invasion and other aspects. The digestive tract is mainly composed of the esophagus, stomach, small intestine, and large intestine.
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