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Chapter 180 The Curious Child

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    Chu Lihua originally planned to go home immediately after dinner, but because she had been sitting on the sofa with Zhang Yifan, the lovely "One Hundred Thousand Whys", chatting for a long time, in the end, it was too late, so she had to stay at Tang Xue's house.

    Today, Chu Lihua and Tang Xue slept in their husband and wife's room. Unexpectedly, Zhang Yifan wanted to sleep with Chu Lihua and his mother anyway.

    Seeing that her son liked Chu Lihua very much, Tang Xue pampered her for a while.

    Originally Chu Lihua wanted to tell Zhang Yifan the benefits of sleeping alone, but since his parents didn't say much, she had no choice but to shut up.

    However, the little guy doesn't rest at all, and he doesn't go to bed without a bedtime story.

    "Then what story do you want to hear?"

    Chu Lihua took over this arduous task.

    "Auntie Lihua. When I was in kindergarten, the teacher said that humans evolved from monkeys, and monkeys eat plants. Therefore, humans should be vegetarians by nature, not meat. Only in this way can they grow up healthily. But I think  Vegetables are not tasty, but meat is delicious. Does that mean elves prefer meat?"

    Zhang Yifan is indeed a curious baby.

    "Uhhow should I put it? The saying that 'humans are evolved from monkeys' is actually wrong. First of all, humans are not evolved from monkeys. Otherwise, there would be no monkeys in the zoo, but long-term monkeys.  When you grow up, you become a human, right?"

    Chu Lihua first drew Zhang Yifan's attention away.

    "Mom, can we go to the zoo to see the monkeys together?"

    Zhang Yifan did not answer Chu Lihua, but turned his head and begged her mother.

    "Okay, when Mom has time, can I take you and Aunt Lihua to the zoo?"

    Tang Xue agreed without the slightest hesitation.

    "Mom is great! Thank you, Mom!"

    Zhang Yifan was very happy to get his mother's affirmative answer.

    "Aunt Lihua, tell me that humans are not evolved from monkeys. Why did our teacher say that? Shouldn't the teacher know the most?"

    Satisfied, Zhang Yifan turned over and continued to question Chu Lihua.

    "To be precise, we humans should have the same ancestors as monkeys. We should have been a kind of ape at that time, and after a long period of evolution, we slowly became humans. Like any kind of ape alive today, whether it is  Gibbons, chimpanzees, gorillas, orangutans, don't become humans directly, they just have a common ancestor with humans. It's just a different evolutionary process."

    For this kind of popular science knowledge, Chu Lihua can't tell it in the way of storytelling.

    "Then, why don't they learn from human evolution? And why aren't we furry? Also, what exactly is evolution?"

    Zhang Yifan's questions came one after another like a cannonball.

    "Then first of all, let's talk about why our close animal relatives, such as chimpanzees, gibbons, or a little further away, all kinds of monkeys, are covered with hair, but why come to us humans, only the hair on the top of the head is left.  Still have large patches of hair, and the rest of our body, if there is hair, will be sparser?"

    Chu Lihua repeated and deepened the question. He just had to think about how to say Zhang Yifan to understand, but he didn't want to wait for Chu Lihua to think it over.  Therefore, you must speak first.

    "In this world, there is a type of animal whose babies grow up on their mother's milk. This type of animal is called a mammal. We humans are a kind of mammal. You grew up on your mother's milk, right? But  , in addition to sucking milk, mammals also have some common characteristics, such as most mammals, the surface of the body is covered with hair.

    There are many uses for these hairs.  It helps us maintain our body temperature and not lose body heat too quickly.

    For example, they are elastic and can act as a buffer; like a kitten or a dog rolling on the ground will not hurt.  For example, there are various patterns on the hair, which can distinguish and identify different species and groups; like tigers and leopards.

    As another example, it can help mammals express emotions, such as cats, if they are threatened, they will back up, grin and scream, and the hair on the neck and body will stand up to make themselves look bigger.  , This state is called "explosive hair", which means that the cat is expressing anger, and at the same time, it is also scaring the other party. Look at how strong I am, don't mess with me.

    However, not all mammals have hair, and whales that live in water do not have hair.The skin is smooth, and elephants, rhinos, and hippos are almost hairless.  Why is this?

    Because animals such as whales and hippos that live in water need to swim fast, they may swim faster without hair, while large animals such as elephants and rhinos in tropical areas have a big problem with heat dissipation, so they also need to shed their hair.  "

    Chu Lihua paused for a moment, looked at Zhang Yifan, why didn't she fall asleep?  ?  ?

    "Aunt Lihua, but we don't live in water, so why don't we have hair?"

    Zhang Yifan looked at Chu Lihua with wide eyes curiously.

    Brat,!  Are you one hundred thousand why?

    "Actually, human beings were furry at the beginning. Human ancestors lived in forests and usually lived in trees, or at least stayed in trees for a long time. This is just like monkeys today.  But about 3 million years ago, the climatic conditions on the earth changed a lot. There was less rain and many places became dry. When there was a drought, the trees in many places could not survive. The growth of trees requires  There is a lot of water, but grass does not need so much water to grow, so many original forests have become grasslands. The same is true for the forests where human ancestors lived, from forests to grasslands."

    Chu Lihua really worked hard, trying to recall what the biology teacher said before, and then retelling it to this curious baby Zhang Yifan.

    "That's it, there is no way to stay on the tree, because there is no tree at all. What to do, what else to do, go to the ground. The ancestors of human beings were like this. They had no choice but to come down from the tree and leave completely.  From the forest to the grassland.

    In this process, human beings lost the same black hair as their close relatives, chimpanzees, and became what we see now.  "

    "Could it be that you don't need hair to live on the grassland? Without leaves to block it, don't people need more hair when they are cold? Why do they take off their hair instead?"

    Zhang Yifan tilted his little head and looked at Chu Lihua, blinking his big curious eyes.  (Remember the site URL: www.hlnovel.com
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