Interesting Phenomena of living things

Chairman : CuiXianweiSecretary : YouFengtaoReporter :XuXingzhouCollector : LiuQing

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Because the soft shit contains proteins, water-soluble vitamins and other nutrients .Rabbits eat the soft shit which can improve the utilization rate of the feed, this is a normal behavior.

Also they eat hard shit sometimes .If a rabbit suddenly stops eating shit, it will cause some disease. As the shit goes through the digestive system many times, the nutrition in the food will be digested and absorbed further.

If a little dog rises its claws, and looks relaxed

and happy, it's just waiting for your

attention.

When a dog licks its nose, this activity shows that it has some anxiety.

If a dog clips its tail and lays back its ears, or it retreats a few steps behind you, there can be sure that It is worrying about somethings around. May be there is a stranger or an object that confuses it

When your puppy climbs to another dog's body, or stands up and holds down it with its claws, which is to say: "I am the first dog, you can not forget this!”

Ears back If a dog shrinks

ears, lays down head, it is a performance of fear. If both sides of the ears wrinkled, it may be a little nervous

Listening with heart When a dog is listening caref

ully, it has an aware of something.

Sad expression If a dog close to its

master with its head down, eyes lightless, it is a symbol of sad.

Puppy belly overturned, the paws outstretched into the sky , It is the expression of humility and obedience.

Crocodile's stomach as hard as a stone . The general reason to devour rocks is to digest, not only to digest tortoises( 乌龟 ), fishes, birds and other small bodies of animals, and even such as giraffe( 长颈鹿 ), buffalos( 野牛 ), lions and other large-bodied animals. Sometimes in order to defend their territories they eat other crocodiles. In addition to this normal swallow, the crocodile also swallowes a lot of stones. So that stones can long remain in the abdomen, with the help of stones the crocodiles can aslo dive under water long time.

Some fishes will exchange the gender depend on the change of age and environment . For example, finless eel( 黄鳝 ) it has two kinds of reproductive organs, can be interchangeable.

In addition to this ,the clown fish can aslo change their gender,scientists have found that in the couple of clown fish .If the female fish died ,afther a heart-struck time the male fish will change its gender into female.

Another being can aslo do this ,this is a kind of earthworm which live in the ocean.If two femina fell in love with each other. The big one will gradually change into a male, transforming herself into a "husband." Of course, if the bodily form of the “wife" exceeds the " husband ", their "husband and wife" roles will be changed. In a word, who is bigger, who will be the "husband".

When a hen in the process of incubation, often issues "gu gu gu" sound. It may be comforting the chicks. Before the chicks break out of the shells, they issue a “ji ji ji” sound and the sound from weak to strong, then the hen makes a sound of “gu gu gu” as a response. This dialogue will continue for several hours. And then chickes at the same time breaking out of the shell.

When artificially incubate 人工孵化 chicks, the time of chicks breaking the shells makes a great differet from the natural hatching Researchers believe this response is good. On the one hand, the hen makes the chicks fell safe. On the other hand the hen can understand the needs of the chicken. Such a dialogue makes the hen's voice is familiar to the chicks. That is the foetus education, so that chicks can understand the mother's accent , recognize their mother, and thus adapt to the environment and they can grow healthly .

There is a kind of interesting and surprising plant in South America, Selaginella （卷柏） .When the climate become dry and it is suffering from severe water shortage,This kind of plant will pull up its roots from the soil,make itslfe into a ball,They become much lighter and rounder in this way.With the help of the winds,they can roll on the ground like balls.Once they reach the places where there is plenty of water. The balls will be opened,then they will take their roots into the soil and settle down provisionally （暂时地） ,As they can rise again,pepole aslo call them Revival Herb （复活草）

The laugh tree in African botanical gardens will issue a "Ha! Ha!" sound. The laugh tree can grow to 78 meters high, and has a brown trunk and oval-shaped leaves. Between each branch there is a fruit, shaped like a bell. Each fruit has many small globules in it. And the fruit shell is filled with many holes, when the breeze blows, the small globules will roll inside, then we can hear the "Ha! Ha!" sound.

Even more interesting is that people use this feature to scare away the birds that would eat crops,like the scarecrow （稻草人） .

Welwitschia mirabilis ( 百岁叶） In the southwestern desert in Africa, growing a kind

of tree that has a big stump （残枝） , it‘s called Welwitschia mirabilis .It looks very strange, the stump thing is its stem, less than 30 cm high, but is very thick, about 60 centimeters in diameter. Although it only has two leaves, the total life of them can grow more than 100 years. This is the oldest leaves in the plant kingdom.

In some parts of Madagascar in Africa, there is a tree called maneating tree. It‘s shaped like a large pineapple 菠萝 , about 3 meters high, branches like snakes, so the locals call it "snake tree."

This tree is extremely sensitive, once the bird land on its branches, and soon the bird will be seized and digested. American botanist Rysl in 1937, feeled the power of this tree: he accidentally hit a branch of it, the hand soon be entangled. When he pulled his hand out. he found his hand had been pulled away a large piece of flesh .

The End