Popular science knowledge of life, popular science knowledge of life

<><Popular science knowledge of life

1. Why is food in canned food not easy to spoil?

Luncheon meat, bean drum scale fish, tomato beans. They are all delicious canned foods, and they can be stored for a long time without being easy to spoil. This is because the cans are sealed, so bacteria cannot enter.

When people make canned food, they extract all the air from the can and seal it. In the absence of air, even if the food inside is stained with a little bacteria, they will not be able to survive or reproduce!

2. Why do babies cry when they are born?

Babies cry when they are born, not because they are unhappy, but because they are gulping for their first breath of air! When babies are born without their mothers, their first breath of air rushes to their throats, which violently strikes their vocal cords, causing them to vibrate and make a cry-like sound.

3. Why does the lizard's tail keep bouncing after it is broken?

In order to protect themselves, many lizards also protect their eyes and ears; When some lizards are attacked, their tails will break off due to violent muscle contraction. Based on the fact that there is still a part of the nerve alive in the severed tail, it will constantly bounce, thus distracting the enemy in order to escape. Don't think that their lives will end like this, in fact, it will only take many months for the tail to grow back and continue to live.

4. Why do squirrels have particularly large tails?

Don't look at the tail of the easy mouse! While the squirrel was jumping up and down the tree, its tail was playing a great role. It allows the squirrel to balance when jumping over a tree, preventing it from falling and getting hurt.

In addition, this large tail can play a protective role in winter, tightly surrounding the body of the squirrel, which is both convenient and practical.

<> "Popular Science of Life Knowledge".

1. Take a piece of bread and fill it with vinegar, then put it in the trash can and let it sleep, and there will be no nauseous smell after taking out the bread the next day (this skill is also applicable to all kinds of stinky things).

2. The oil box on the range hood is difficult to clean, you can apply a layer of dish soap on the clean oil box, and the oil can be emulsified if it drops on it, and then pour the oil, or it is much easier to clean.

3. When throwing the express bag, you don't want to leak your personal information, so wipe it with toilet paper dipped in water

4. When you go out, say to yourself: Reach out and ask for money. (ID card, mobile phone, keys, wallet) never have to worry about forgetting something again!

5. If the rice is burnt, put a few green onions or garlic in the burnt rice and simmer for a while to remove the burnt taste.

6. I often eat hot pot in winter, and the hot pot soup splashed on my clothes is smeared with toothpaste, rubbed in clean water, and the stool can be cleaned immediately.

7. After the towel becomes hard, find a clean pot without oil, put water to boil, then add edible salt to the pot, and then put the towel to cook for about ten minutes, it will become soft.

8. Wash the glass with a little egg white remaining on the eggshell, dip a little with a sponge, and then wipe the cup, which can remove the white mist and make the cup clean and transparent.

9. After cutting the tofu into pieces, soak it in lightly salted water for 3-5 minutes to remove the beany smell of the tofu.

10. Banana peel is rich in tannin, which is used to polish shoes and make the upper smoother.