Can fish talk?

Do you believe that fish can talk? This is an intriguing thing. I wonder if fish can talk.

My family bought two small goldfish, one is all black, and the black one is called Lele, because it is very happy. A red and white name is Xinxin, because it knows how to appreciate. Isn't it fun? They live in a fish tank, which is "unusual". There are mountains, flowers, trees, shells and colored stones. Isn't it beautiful? Let's take a look together!

At about five o'clock in the morning on September 23rd, I was about to breast-feed. I saw such a phenomenon. I spilled fish food into the fish tank, but Lele ate a little and stopped eating.

At 5 pm on September 23rd, I saw the shell in the fish tank turned upside down. Xiao Xin saw it, as if she thought-this little shell was going to die. She swam quickly and reached it with her head. After three or four minutes, I can't reach it. She swam to Lele, swept Lele with her tail, and then touched her head. Lele and Xinxin are together.

Through two observations, I know that human beings have their own expressions and communication languages, and animals also have their own kingdom expressions and communication. This also tells us that if you don't unite, then you will have nothing, and the friendship between friends is really great. At the same time, you should observe more and find more, but you can't hurt small animals just because you are doing experiments on them, because animals are friends of human beings.

Why don't ants get lost?

Ants, I believe everyone is familiar with them. Then who can really understand ants? Why don't ants get lost?

With this question, I consulted some books. According to the book, ants leave some smells along the way after starting from the nest to their destination, and then return to the nest. Touch each other with tentacles and notify other ants. Scientists have done an experiment on this problem. Scientists first identify an ant and vigorously clean up the place where he reaches his destination along the way. When the ant came back, it suddenly stopped at the place where the smell was wiped off. Looking for something while walking in circles. People come to the conclusion that ants can tell their directions by their sense of smell.

In order to confirm this conclusion, I did an experiment. I first prepared a twig about 10 cm, and put the bait-small candy on one end of the twig. I put this device near an ant nest. After a while, an ant came out to explore the road. After I led him to the stick, he went to the place where the sugar was put, as if he were smelling it. I took this opportunity to cut off the broken part of the stick by one centimeter. When the ant came back, it turned left and right where it was cut off, but it couldn't find its way home.

After a while, I repeated the above experiment, and the ants still didn't find their way home.

Through these two experiments, I finally know the secret of ants not getting lost. It turns out that ants can tell the direction by smell.

Knowing the secret of ants, I was thinking: Can you make an ant alarm? When an ant approaches the alarm, the alarm can "smell" the ant and then chirp to let us know that the ant has gone to the cupboard or other places.

"Students, have you brought all the eggshells?" The teacher asked. "I brought it!" We answered with one voice.

In today's science class, the teacher asked us to bring eggshells. What do you do with eggshells? Are you a tumbler? We are all curious.

"Today, we are going to do a small experiment with these two and a half eggshells. Before you do it, please guess, I use this pencil to stab the eggshell vertically downward. Is the eggshell with the mouth up broken first or the eggshell with the mouth down broken first? " "Of course, the mouth is first!" Most students scrambled to answer. "Mouth up first!" My deskmate is determined to go against everyone. The teacher smiled and said, "Well, let's do an experiment to see whose answer is correct."

The teacher called a classmate to the podium and asked him to point the pencil up at the eggshell. At the teacher's command, the students let go of their hands, and the pencil poked the eggshell, but it didn't break. The teacher asked him to try several times, and when the pencil stabbed for the third time, it finally broke the eggshell. Then, the teacher asked him to poke the eggshell with a pencil. "Once, twice, three times ..." Let's count together; But that half eggshell is like wearing armor, and it won't break after being stabbed more than ten times.

"Yes! I guessed right! " The deskmate danced with joy. Although we are not convinced, after many experiments, we found that the same two eggshells, tied vertically with a pencil, are indeed easier to break with their mouths up. The teacher told us that this is because the stress on the eggshell with the mouth up is concentrated, while the stress on the eggshell with the mouth down is scattered, so it is stronger. No wonder all the workers and uncles on the construction site are wearing face-down safety helmets. That's the truth!