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Poison dart frog-basic introduction poison dart frog is also called poison dart frog or poison dart frog. It is a brightly colored poisonous frog in tropical America, and some of its skin secretions are used by South American tribes to smear on the tip of spears or arrows.
Poisonous poison frog-shape characteristics Poisonous poison frog is small, usually only 1? 5 cm (0.5? 2 inches), the smallest is only 1.5 cm, but a few members can reach 6 cm. The epidermis is brightly colored with red, yellow or black stripes. These colors are often used to warn other animals in the animal kingdom that they are not suitable for eating. These colors make poison dart frogs look very different-they don't need to hide from the enemy, because attackers are afraid to go near them. Poison dart frog-geographical distribution: There are 130~ 170 species of poison dart frog, belonging to 6~8 genera, distributed in Latin America from Nicaragua to southeastern Brazil and Bolivia. Poison dart frogs are mainly distributed in tropical rain forests such as Brazil, Guyana and Chile.
Poisonous poisonous frogs-breeding poisonous poisonous frogs have special reproductive behavior. Mating between males and females often occurs near pineapples that live in fallen trees. This is not because poison dart frogs appreciate the beauty of flowers, but because the rotating leaves of these plants construct a small "pond", which provides a place for frog eggs to develop. Male and female mate, and female frogs lay eggs in stagnant water. Once the egg develops into a tadpole, the female frog carries the tadpole from the ground to different "ponds" of the bromeliads with a proper amount of stagnant water in the tree, and (because tadpoles are carnivorous, the two tadpoles will kill each other together) lays the unfertilized eggs as food for the tadpoles.
Poisonous poison dart frog-Poisonous poison dart frog's frog venom can destroy the normal activities of the nervous system, and its main function is to hinder the ion exchange in animals, making the nerve cell membrane a bad conductor of nerve impulses, making the instructions sent by the nerve center unable to reach the tissues and organs normally, and finally leading to cardiac arrest. However, the poison of poison dart frog can only work through human blood. If you don't cut your finger, the venom can only cause a rash on your finger at most, but it won't be fatal. Smart Indians all know this truth. When catching poison dart frogs, they always wrap their hands with leaves to avoid poisoning.
Indians painted their arrows and javelins with poison from poison dart frogs a long time ago. They stabbed the frog to death with a sharp needle and then dried it on the fire. When the frog is heated, the venom oozes from the gland. At this time, they rubbed the arrow back and forth on the frog, and the poisonous arrow was made. With the poison of a poison dart frog, you can wipe 50 darts and arrows. Shooting wild animals with this poisonous arrow can kill their prey immediately. After Columbus discovered the New World, "civilized people" broke into the world of poison dart frogs and brought them to the city as pets. Sadly, the poison dart frog is extremely fragile and has strict requirements on the temperature and humidity of food and living environment. Therefore, once they are taken out of the rainforest, it means the end. The poison dart frog is more and more threatened by human beings. [1] Poisonous poison dart frog-species classification The poison dart frog of sapphire is extremely toxic, and its gorgeous body color keeps potential predators away. They can't swim in the water without webbed feet, so they won't appear in the aquatic environment. The toxin of strawberry poison dart frog is smaller than other poison dart frog species, but the toxin of strawberry poison dart frog will make the wound swell and feel hot. Poison dart frog, poison dart frog, is one of the poison dart frogs in the family. One poison dart frog is enough to kill ten adults. The poison dart frog, named after its bright patterns, is the largest species in the poison dart frog family and can grow to 2 inches (5.08 cm) long. The colors and patterns of this frog are formed in the living environment of the highlands in the northeast of South America. The striking red or orange skin of the spotted back poison frog is a dangerous signal to potential predators. This frog lives on the fallen leaves on the rain forest floor in the southern Amazon basin of South America. Now, logging, fire and illegal pet trade all threaten the frog population. The green poison dart frog is native to the south-central United States, and 1932 was introduced to Oahu, Hawaii to control the mosquito population. The frog lays eggs on fallen leaves on the forest floor. After the eggs hatch, the male frog will take the tadpoles into the water. Due to habitat loss and illegal pet trade, this frog species is also on the IUCN Red List of Endangered Species. [2] Although there is a lack of scientific research on poison dart frog-culture, it is estimated that the life span of poison dart frog is 3- 15 years in the wild and 20 years in culture. Poison dart frogs are generally non-toxic. Most species will reach sexual maturity around 1.5-2.5 years old.
Determining the sex of poison dart frog can be observed by its behavior. Mature male frogs cry for courtship after eating or heavy rain. The sex of the young frog can be observed from the back. The male's back is generally inclined downward without wrinkles, while the female's back is round, but with large wrinkles. In addition, gender can be judged from their toes. Some women have narrower toes, while men have wider toes. Mature males of some species have a gray band around their necks, which is where mating calls are made. All poison dart frogs come from the tropics. When the humidity is 80- 100%, the daytime temperature is 22-27℃, and the nighttime temperature is not lower than 16- 18℃, most species will flourish. Some of these species can withstand lower temperatures.
I hope this information is useful to you.
2. Writing the composition of Zinnia My family planted a plate of Zinnia, which was the seed given to us by our neighbors and we planted it.
The flower buds of zinnia are pale yellow, and gradually turn green. It seems to arch out the soil.
Zinnia grows well. The leaves are large, oval and pointed at both ends. The stem is covered with fine fluff, and when it first grows out, it feels soft. Long-term warm reception, stiff, as if there were worms on your hands.
The flowers of zinnia are orange, pink and vermilion. The middle stamen is yellow, thin at the bottom and thick at the top. Petals are layered, layer by layer, and one layer is composed of dozens of small petals.
This is my zinnia. Do you like it? You can keep it if you like.
Today, we learned the text "Brush Li", which benefited me a lot.
The text "Brush Li" is mainly about: Brush Li is specialized in painting, the house he painted is very empty, and he must wear black clothes when he works, and there is no white spot on his body when he finishes his work! One year, brush Li accepted an apprentice, and brush Li took him to work, without any white spots on his body! One year, Brush Li accepted an apprentice, and Brush Li took him to work. The apprentice searched the whole body carefully when the master finished painting a wall and didn't find any white spots. Until finally, he saw a white dot. When he looked carefully, it turned out to be the hole burned by the master when he was smoking, and the white pants inside were exposed.
This text tells us a truth: as long as you are willing to study hard and study hard, it will pay off, which can't help but remind me of the scene when I was learning English: I just came into contact with English at that time, and "English" was very strange to me, except for 26 letters. The result of the first English exam is imaginable. From then on, I studied English hard, listened to tapes and recited words every day, and my grades finally went up. Now, my English scores are among the best in my class.
"Rome was not built in a day." As long as you are willing to persist and work hard, you will certainly succeed.
4. About writing Wei's composition Rain, it seems that there are thousands of magical fingers, like thousands of strings, which pop up ever-changing sounds.
The spring rain is soft, the summer rain is turbulent, the autumn rain is desolate and the winter rain is cold; Due to the change of seasons, my mood is different. However, the color of rain is as beautiful as the sound of rain.
There are many excellent works describing rain in picture music and poetry. Line color and musical melody are ethereal and transparent.
The thin rain flower, like a floating fog, is white, kissing people's faces lightly and feeling itchy slightly; And gently wet the clothes. Umbrellas are like sails, floating and sinking in the rain; Also like big wings, the southeast and northwest are boundless, drifting around because of the wind.
Silent rain, silence is better than sound; Funny rain really makes people happy. You can wander outdoors without wearing a raincoat. Rain, like honey and wine, moistens your soul.
-This strange rain, this strange rain, is like a dream.
I remember the apricot blossom and spring rain in Jiangnan. Raindrops hit the awning, and there was the fragrance of pear blossoms in the rain. I remember the summer rain in the West Lake, full of vitality, and the lotus leaves all over the lake were beaten. I remember the autumn rain in Tianmu Mountain. The fog was locked and all the trees rustled. The pines and cypresses that hold up the sky are washed away by the rain, which makes them look particularly vigorous. I remember the winter rain in Fuchun River, like crying, and the smoke from huts on both sides of the river was gloomy, like a colored pencil drawing.
It's a drizzly and breezy night, suitable for reading poetry and prose. On a stormy night, horror supernatural novels are desirable. Otherwise, it is a pleasure to invite a few confidants, make a few cups of strong tea, buy a bag of peanuts and light a candle. Wind and rain are more suitable for pregnant women, who often suffer from insomnia; A sound of wind and rain seems to leave people and whisper.
That summer, my friends and I sat in the Spring and Autumn Pavilion. At that time, the water chestnut was ripe. On Lianchi Beach, the villagers were driving boats and busy picking. The white clouds in the sky and the egrets on the water set each other off. A sudden shower, Malik Pentium; Banping Mountain suddenly disappeared, and only the dense rain hung a bead curtain on Lianchi. In the shower, the boats that collect water chestnuts are still rocking leisurely. The people on the boat are even hemp fibers.
There is not much rainfall in the south of Taiwan Province Province. Especially in Kaohsiung, the dust is all over the sky; The branches and leaves are covered with dust, and after a shower, it is green and brand-new. Shoushan after the rain, enchanting overlooking the silent love; Silver scale water waves are also dyed green by green hills.
On the banks of the river, on the rows of cement columns, the porcelain covers of rows of street lamps are embedded between mountains and rivers like white jade balls, which vaguely shows the scenery of the West Lake.
"The head of the Spring Rain Building is eight feet high. When will you go back to Zhejiang Chao? "
5. Elephant, forest, grassland, writing composition 276 words In a beautiful big forest, there is a crystal clear stream, next to which an elephant lives. The green grass by the stream looked around curiously. Elephants come to play by the stream every day, so they become the closest friends of the stream and the grass.
The three of them live a carefree and free life and never quarrel. One day, a storm came and a small drop of water came. When the storm stopped, the air became much fresher and the elephant went out of the house again.
Looking for his friend to play, at this moment, the elephant saw a small water drop playing on the grass and said, "Small water drop, can I be your friend?" Seeing the ugly elephant, Xiao Shuizhu said, "Who are you?"
Ah, you are so ugly, who will make friends with you! You insult my beauty here. "Say that finish slipped down from the grass, angrily walked away. The elephant is very sad, and the stream and grass are comforting the elephant.
Sad, just then, the little water drop can't stand the sun. So he desperately called for help. When the elephant heard this, he quickly dried his tears, sucked some water and sprayed it on the water droplets. Small drops of water are the same as before. small
Water drops and elephants have also become inseparable friends.
This story tells us that a person should not only look at appearance, but also look at inner beauty.
6. What are the 300-word compositions about Hongchiba? Today, my father told me the legend of the famous mountain Hongchiba in Wuxi County, Chongqing.
The mountain is very high, with a wide lawn and many animals. Summer is a good place to escape the heat. Now it has been developed into a beautiful tourist attraction.
Legend has it that a long time ago, before the crust of Hongchiba changed, there was a red pool and a blue pool. It was found that the water in the two pools often tumbled. It turns out that there is a red python in the red pool and a green python in the green pool.
The time is getting longer and longer, and their kung fu is getting stronger and stronger. Green pythons have bad intentions and often come out at night to steal villagers' crops. The red python has a kind heart and advises the green python not to do bad things. Green pythons never listen. One day, they got into a fight. The red python spewed out flames and burned a mountain, which became the present fire dam. The green python spewed out water and became the present Dongxi River.
Finally, the green python was defeated and taken away by the mountain god. The red python has been here to protect the villagers.
Since then, in order to commemorate the red python, people named it Hongchiba. Now that the red python is gone, the red pool is still there.
7. Writing Silkworm Baby Composition The National Day is coming, and I think of grandma's silkworm baby again. I can't help but get excited when I think about it. So I said to my father coquetry, "Dad, when can we go home?" "Soon! We can go back to grandma's house in the afternoon. " Yeah, my excitement has doubled again, and I can finally go home to see silkworms.
As soon as I got home, I asked grandma where the silkworm was. Grandma unhurriedly told me that she was in the East Room, and then took me to the Silkworm Room. As soon as the door opened, she went to cook. Grandma is really used to it. On the other hand, I observe silkworms with great interest.
At this time, the silkworm has begun to cocoon, and its fat body is basically stuck in the plaque, leaving only its head still twisting flexibly. I looked at it carefully. Silkworms are spinning silk! "But this little thing, despite hard work, is still so slow. Alas, it's really slow and meticulous! It took a long time to finish the first floor. It must have taken several days to reach this level. You are so patient! I'd better wait until tomorrow to see it! I have no patience to stare at it all the time. So I made a mark there in case I don't know which "area" it belongs to tomorrow.
The next day, I went to the silkworm house happily. Wow! It's too white It looks like an oval jiaozi, and it is soft. I reached out my finger and touched it. Is it difficult? Don't be too surprised! Silkworms must be hiding in this perfect white house, right? I have to admire silkworm, a skillful craftsman! In the afternoon, my aunt took out all the silkworm plaques and said she was going to pick cocoons. I thought it would be fun, so I said to my aunt, "aunt, I'm going to pick cocoons, too." Can I pick a plaque? " ""of course! " Aunt generously promised. I quickly moved one. The small bench sat next to the aunt, learning her every move: one hand was placed on one side of the silkworm plaque, the other hand was placed on the other side of the silkworm plaque, one finger pushed in, and the other hand caught the pushed cocoon. Gradually, my movements became more and more skilled. The passing mother saw it, worshipped me as a teacher and picked cocoons like me. Hehe, what a happy thing it is!
I have gained a lot in these two days at home and mastered a lot of knowledge about silkworms. By the way, isn't our teacher like a silkworm The teacher is great. They passed on their lifelong knowledge to us. Just like silkworms, they selflessly turn their lives into cocoons that can be woven and dedicated to people.
8. Xiangshan writing 128 model essay:
Xiangshan is a beautiful place, which is famous far and near. Seeing is believing, so I don't hesitate to travel long distances and go to Xiangshan with my mother.
The next day, I slept in bed and dreamed that there were mountains and waters in Xiangshan, and there was a "hello, hello!" Get up, "mom said. I woke up from my dream and said, "Is it time?" "What do you say?" Mom said angrily. I nodded without thinking. At 7 o'clock, we started on time. Two hours later, we finally arrived at Xiangshan. "wow! It's really beautiful. Stone has been raised-"I couldn't help it again. However, Xiangshan really deserves to be called Xiangshan, unlike Ye Gong, who is a dragon in name only.
As soon as I got off the bus, I saw the beach covered with snow. Why? You have to use your head. This is the famous white sand beach.
The sand on the white sand beach is really beautiful like white snow. Pick up a pile, thin and soft, and you can't put it down.
A gust of wind blew, and the waves patted the coast and hit my little feet. There are many small shells when you reach out. Accidentally came across a round thing and a long one. I picked it up and looked at it. Wow! It turned out to be a long conch. Take a closer look, a crayfish is waving pliers inside. I looked at that hard thing again. I'm more surprised than before. It turned out to be a clam. It covers the shell tightly, as if someone is coming to catch it. I know mussels can't stay in the sun for long, so I let them go.
I also released crayfish, because I hope more lobsters can swim happily on the bottom of the sea.
Not only unconsciously, but also the time is up. When I get home, I can't forget Xiangshan, the sea and the white sand beach, because Xiangshan has long been in my mind.
9. composition about writing grass I love grass
I like colorful flowers, I like tall trees, but what I like best is green grass.
The grass is careless, and the world is home. Grass is a big and vibrant family. It grows on rivers, roadsides and moss. . We can see him everywhere. How many people love grass? Grass never needs us to fertilize and water, but its color has dyed our city, our country and my heart.
In the corner of our school, there is a green meadow. The grass is full of vitality. If you look closely, it is light green with yellowish color and watery. Right? So cute! A breeze blew and the grass began to dance beautifully again. Some stretch their shoulders, some bend over and touch the ground, and some swing from side to side. It's really elegant At this time, I couldn't help walking on the grass, squatting down, stroking their little heads, and then looking at their appearance, how cute they are!
Although the grass is so delicate, they will not bow their heads like a storm.
That night, it suddenly began to rain cats and dogs, and the rain fell like a coin the size of a nickel with lightning between it, hitting the window and making a "ding-dong" sound. At this time, I suddenly thought: the grass in the school must have withered alternately! It is raining. . It didn't stop until the next night. The next day, it was clear in Wan Li and Wan Li. I flew to the school happily and came to the corner of the campus-the green belt. The sight in front of me stunned me: after the heavy rain, the branches were washed off by the rain, the flowers were uprooted by the rain, and only the grass stood resolutely in the green belt, motionless.
Although the grass is not as beautiful as a flower or as tall and straight as a tree, its vitality is so tenacious! "Wildfire never completely devoured them, but they grew taller in the spring breeze." How well Bai Juyi wrote this poem!
I love this indomitable grass.