Our distance is not far, but it seems to span the whole earth. ...
The same campus is close enough to see familiar and unfamiliar figures, and the same classroom is close enough to breathe the air around each other, but we are separated by an eternal distance. ...
We are ignorant and naive in primary school, and we are inseparable. Five years, five years, five years of girlfriends, but you can't fight for just two months. Although we are still in contact with each other, holding the microphone, we can only say hello politely, or after a long silence, we can only listen to each other's strange breathing. Maybe it was a joke. Who else in the campus of Nuoda University can see that we used to be such good friends? Even if a simple smile disappears with the passage of time, we become the most familiar strangers.
The time is really strange. It's only two months, only two months, but it covers all five years. We have changed too much in two months.
It has been said that the carousel is a cruel game, chasing each other, but always keeping an eternal distance. Distance, an invisible and intangible abstract noun, scares me …
2. Charming South Pole, North Pole and North Pole
Today, we went to listen to a professor's speech. A professor described how they survived in such a cold climate in the North and South Poles. They also met with storms and almost had an accident. Many scientists who explored died tragically in the North and South poles. However, this did not stop mankind from exploring the mysteries of the North and South Poles.
On one occasion, Professor Wei was caught in a snowstorm on the plane. The plane suddenly lost control because the wind at the poles was very strong. Fortunately, the pilot is very good. When the storm was relatively weak, he lifted the plane again and avoided a terrible accident. In such a harsh environment, a professor played with penguins and ran around the car with polar bears. ...
A professor also told us that because of the greenhouse effect, because of the rising temperature of the earth, glaciers are melting and the living conditions of animals are being destroyed, all because of human beings. One day on earth, I don't know how many planes are flying in the sky, how many cars are running on the ground, and how many factories are discharging sewage ... all these behaviors will lead to a result: animals die and bad weather comes.
So we should protect the environment and protect the poles. Because the two poles not only have many valuable resources, but also play a role in regulating climate and so on. So we must protect the two poles and not let them be polluted!
3. How to write this composition well Life often comes and goes in a hurry and is fleeting. People often feel the value of "having" in the pain of "losing". When the rush darkened the bright stars in the night sky, they suddenly found that the brightest one had crossed the sky and disappeared into the boundless infinity, and suddenly realized the value of life. Life is like a gorgeous crystal, just like its sparkling beauty. The past is helpless, because it can't be redeemed; Only now can we grasp it. People are always at a loss to drift with the tide and sink into the so-called "pursuit". Pursuit exists because of possession, but possession is often ignored because of pursuit. Tragic cycle-mediocre people lose their lives in the rush and the loss of sadness and joy. Then, you might as well slow down, learn to appreciate and cherish. Life may be a journey. But this is not just a trip. If you can't erase the regret of not taking care of yourself all your life, then a leisurely walk and an exquisite life will be a deeper perfection. Pay more attention to your side, and you will gain more. If you think too much, you will get more body odor. If you carefully observe the tenderness of the bud to the bud, there will be no short-term regret; If you pay attention to appreciate the crispness of new green and the luxuriance of leaves, there will be no sorrow of "leaves falling like the spray of a waterfall"; If you care and cherish with your heart, you won't regret it even if it can't last forever. So, enjoy the leisurely pace, enjoy the fun of flying kites in spring and wind with your heart, experience the majesty of the waves beating on rocks in midsummer, taste the elegance of fallen leaves in late autumn, and experience the romance of Xun Mei in the middle of winter. Pay attention to those warm hands, stare at those puny eyes, and bless those who silently pray for you.
Scientists say that the composition of the North and South Poles is the southernmost and northernmost on the earth.
One is called the South Pole and the other is called the North Pole. They are far apart, but they are also the coldest places in the world.
Let's start with the South Pole. It is usually called "Antarctic continent". Although it is covered with ice and snow all the year round, under the ice and snow is the real land. Half the time every year, the sun can't shine on the ground at all, so the Antarctic is completely in darkness from April to165438+1October, which is called "polar night", and the rest of the time, the sun hangs in the sky from morning till night without setting, which is called "polar day".
Because it is too cold, almost no one lives in Antarctica, and few animals and plants live there, but there is one animal that we are most familiar with. Haha, you guessed it, that is QQ Penguin. Penguins living in the Antarctic reality are very cute, although their environment is so bad-after the extreme night comes, the lowest temperature in the Antarctic will reach MINUS 80 degrees.
At this time, the penguin is in hibernation. If you go to the South Pole at this time, you will see millions of penguins standing side by side on the dark beach, warming each other in the roaring snow, and resisting the snow with the warmest fur in the world. They will try to put the little penguin in the middle and pray for the beginning of next year. Little penguins can see the newborn sun ... and then look at the North Pole, which is also divided into "extreme day" and "extreme night", but the time is just the opposite to that of the South Pole. Let's just say that while the penguins in the Antarctic are hibernating, the polar bear in the Arctic may be happily foraging with the baby bear in the glacier.
The beautiful Arctic constitutes the vast territory of the Russian Arctic, and it began to wake up from the long hibernation in late April.
The polar bear slowly sticks its head out of the cave, wobbles and stretches its muscles on the ice covered with warm spring. Terns spread their wings and flew high in the clear sky.
The beautiful snow fox rolled on the green grass like a cotton ball. The polar bear, the owner of the Arctic, is the largest carnivore in the Arctic, so of course it is the owner of the Arctic.
Just as the penguin is the symbol of the South Pole, the representative of the North Pole is the polar bear. From the perspective of ecological balance, if giant polar bears wander around the grassland, it will not only pose a great threat to the survival of a small number of reindeer and musk oxen, but also compete with wolves for food and make them hungry.
Perhaps it is the thoughtful and ingenious arrangement of the creator, or perhaps the polar bear is unwilling to associate with wolves, and the central area of polar bear life is on the ice sheet. Because there are a large number of walruses, seals and other animals here, there are basically no natural enemies except a few whales. Their huge and fat bodies must be eaten by a powerful and greedy animal. The polar bear has just found a place to use.
In this way, polar bears have established their undisputed dominance in this endless world of ice and snow, and become the masters of this white kingdom, so they don't have to go to land to compete with poor grain groups for food. Nevertheless, polar bears are still land animals.
Polar bears are covered with thick white hair, even ears and feet, with only a small black nose. Moreover, its hair structure is extremely complicated, and its interior is hollow, which plays an excellent role in heat preservation.
So polar bears can easily walk on the ice floes without worrying about the cold in the Arctic. Polar bears are streamlined and good at swimming, with claws as wide as paddles.
Therefore, in the icy waters of the Arctic Ocean, it can paddle forward with its two front legs, and its hind legs are together, which controls the direction of progress and acts as a rudder. It can swim for forty or fifty kilometers at a time. Polar bears have claws like iron hooks and sharper teeth.
It can smash the bull's head into pieces with a pat on the front palm. Polar bears run at a speed of 60 kilometers per hour, but it doesn't last long. Generally, they only sprint short distances.
So, if you are attacked by a polar bear in the Arctic, you can consider running a long-distance race with it, so the polar bear will definitely lose. Bright creature-Arctic tern In the South Pole, the most impressive animal is penguin.
However, in the Arctic, it is not polar bears that are respected, but Arctic terns. Penguins are kind and naive, but they look a little silly. Although the Arctic tern is small and exquisite, it is vigorous and powerful.
Often give a person with * * *. Arctic tern is the king of birds. They breed in the North Pole, but they want to spend the winter in the South Pole. They travel to and from the poles once a year, traveling tens of thousands of kilometers.
Although mankind has built a very modern plane for the soul of all things, it is not easy to shuttle back and forth between the poles. Therefore, the tern's spirit and courage to pursue the light regardless of difficulties and obstacles are particularly worth learning. Because they always spend their days in polar summer, and the sun never sets in polar summer.
Therefore, they are the only creatures on earth who live in light forever. Not only that, they also have very tenacious vitality.
1970 Someone caught a tern with a collar on its leg and found the ring on 1936. In other words, this Arctic tern has lived for at least 34 years.
From this point of view, it must fly at least 1.5 million kilometers in its life. Arctic terns not only have extraordinary flying ability, but also are competitive and brave.
Although their internal neighbors often quarrel and fight, when foreign enemies invade, they immediately put aside their differences and unite with the outside world. In fact, they often accumulate thousands of large groups just for collective defense.
Minks, foxes and other animals like to steal the eggs and larvae of Arctic terns, but in the face of such a powerful camp, they tend to shrink back. Not only these small animals, but also the most powerful polar bear in the Arctic is afraid of them.
Someone has seen such a thrilling scene: on an island, a hungry polar bear is trying to quietly approach the colony of a group of Arctic terns. However, its tall body exposed itself prematurely.
At this time, the arctic tern in the quarrel suddenly quieted down, then flew high, attacked in turn, sneaked into the polar bear frequently, and pecked the bear's head with its hard beak like rain. Although polar bears are fierce, they lack the skills to fight back. It only has the ability to parry, but not the strength to fight back. It had to shake its head and the mouse jumped away.
Arctic tern is also a beautiful bird. Its long beak and feet are bright red, just like carved with rubies. The top of the head is black, like wearing a wool hat.
The feathers on her body are gray. If you look down from above, they will blend in with the color of the sea. The feathers under the body are all black. If the fish in the sea look up from below, it is difficult to find their traces.
Coupled with sharp wings and long tail wings, it embodies the ingenious carving and perfect conception of nature. It can be said that the Arctic tern is sacred to the Arctic! Arctic fox, the owner of the Arctic grassland, belongs to canine family, with narrow forehead, round ears, fluffy tail hair and white tip.
The arctic fox is the real owner of the arctic grassland. They have not only lived here for generations, but also have almost no natural enemies except humans. So before fur traders arrived at the North Pole, the Arctic fox really lived a free and carefree life.
Although they can't attack large herbivores like reindeer, they can catch birds, pick eggs, chase rabbits, or catch mollusks on the beach to satisfy their hunger. In autumn, they can also find some berries in the grass to supplement the vitamins they need for a change.
The main food of Arctic fox comes from lemmings. When encountering lemmings, the Arctic fox will jump up very accurately, then pounce on them, hold them down on the ground and swallow them in one gulp.
Interestingly, when the arctic fox smells and hears the lemmings, it will be fast.
6. Talking about Antarctica and Writing about Antarctica
Antarctica includes the Antarctic continent and its surrounding islands, with a total area of about 6,543,800 square kilometers, including 6,543,800 square kilometers for the mainland, 76,000 square kilometers for the islands and 24,700 kilometers for the coastline. There are about 6.5438+0.582 million square kilometers of ice shelves in Antarctica. The area of Antarctica accounts for one tenth of the total land area of the earth, which is equivalent to one and a half times the area of China.
As we all know, it is not easy to go to the South Pole, because the Antarctic continent is an inaccessible continent. The nearest continent to the Antarctic continent is South America, with a 970-kilometer-wide Drake Strait between them. The Antarctic continent is not only far from other continents, but also surrounded by ice shelves and floating ice for several kilometers or even hundreds of kilometers. The area of ice floes in winter can reach190,000 square kilometers. Even in the Antarctic summer, its area is 2.6 million square kilometers; There are tens of thousands of huge icebergs floating in the waters around the Antarctic continent, which has caused great difficulties and dangers for maritime navigation.
According to the internationally accepted concept, we generally refer to the area south of the Antarctic Circle as the Antarctic, which is the floorboard of the Southern Ocean, its islands and the Antarctic continent, with a total area of about 65 million square kilometers. The polar circle will have extreme days and nights, and it is also the dividing line between temperate zone and cold zone.
The highest continent on earth is not the Asian continent with the Qinghai-Tibet Plateau, but the Antarctic continent. The average elevation of other continents on the earth is: 950m in Asia, 700m in North America, 600m in South America, 560m in Africa, the lowest in Europe, only 300m. The average elevation in Oceania is not clear, and it is estimated to be only a few hundred meters. The Antarctic continent, in terms of its natural surface, has an average elevation of 2350 meters, which is much higher than that of Asia and the highest in other continents. However, if the ice sheet covering the Antarctic continent is peeled off, its average height is only 4 10 meter, which is far lower than the average height of the whole land on the earth.
Students, after my introduction, you must be familiar with the Antarctic continent!
7. How to write this composition well Life is often fleeting.
People often feel the value of "having" in the pain of "losing". When the bright stars in the night sky were dimmed in a hurry, I suddenly found that the brightest one crossed the sky and disappeared into the endless infinity, suddenly realizing the value of life.
Life, like a gorgeous crystal, likes its crystal-clear beauty and its fragility. The broken silver light of the crystal is just a sad tear from the heart.
The future is nothing because it is unpredictable; The past is helpless, because it can't be redeemed; Only now can we grasp it. People are always wandering at a loss and settling down in the so-called "pursuit".
Pursuit exists because of possession, but possession is often ignored because of pursuit. Tragic reincarnation-mediocre people run around and lose their lives. Then, you might as well slow down and learn to appreciate and cherish.
Life may be a trip, but it's not just a trip. If you can't erase the regret of working hard all your life until you reach the peak of your life, then a leisurely walk and a refined life will be a deeper perfection.
Pay more attention to your side, and you will gain more; If you think too much, you will get more body odor. If you carefully observe the tenderness of the bud to the bud, there will be no short-term regret; If you pay attention to appreciate the crispness of new green and the luxuriance of leaves, there will be no sorrow of "leaves falling like the spray of a waterfall"; If you care and cherish with your heart, you won't regret it even if it can't last forever. So, enjoy the calmness of slowing down, enjoy the thrill of flying kites in the wind in spring, experience the majestic waves beating against rocks in midsummer, taste the chic of watching fallen leaves flying in late autumn, and experience the romance of Xun Mei in the middle of winter and the twelfth month.
Pay attention to those warm hands, stare at those puny eyes, and bless the person who silently prays for you. On the road of life, we don't need the rush of "soaring into the sky" or the indulgence of "Oh, let a man with spirit take risks in his favorite place", so slow down, remember, do and cherish.
8. Antarctic and Arctic Environment The most striking difference between the Antarctic and the Arctic is their geographical location and topography.
Antarctica is a continent surrounded by the ocean, which is located at the southernmost tip of the earth. The Arctic is an ocean basin surrounded by the mainland, which is located in the northernmost part of the earth. Both the South Pole and the North Pole are very cold, but the climate in the South Pole is much worse than that in the North Pole.
Antarctica enjoys extreme titles such as "World Cold Pole", "World Wind Pole" and "World Drought Pole". Especially its temperature, the annual average temperature in the Antarctic is -50℃, while the annual average temperature in the Arctic is much higher, which is-18℃. )
Being at both ends of the earth, why is the temperature in Antarctica so much lower than that in the North Pole? First of all, we know that Antarctica has the largest ice sheet in the world, which makes it the largest "cold source" in the world. It radiates cold all day and cools the air quickly. Secondly, the white Antarctic ice sheet reflects most of the received solar radiation back into the air like a huge mirror.
Because the Arctic does not have an ice sheet as big as the Antarctic, it will not lose such a huge amount of radiant energy. Third, as we all know, Antarctica is a continent, and around it, it is surrounded by the vast southern ocean.
Most of the southern ocean is frozen by sea ice, and some even remain frozen all the year round, which greatly hinders the exchange of seawater and air and keeps the sea surface around Antarctica low. Fourth, Antarctica is a continent surrounded by oceans. The North Pole is an ocean, surrounded by land.
This fundamental difference makes them very different. As we know, the mainland absorbs a lot of heat, but dissipates it quickly, so the heat storage capacity of the Antarctic continent is very poor.
The Arctic is an ocean, and the thermal storage capacity of seawater far exceeds that of the Antarctic continent. So this difference in topography leads to the fact that the South Pole is much colder than the North Pole.
Fifth, the Antarctic is the wind pole of the world, and persistent strong winds will eventually lead to extreme cold. Finally, there is another very important reason. The strong westerly circulation of 40 ~ 60 degrees south latitude has formed a very special wind "shadow wall" around the Antarctic region, which greatly hindered the warm air flow from the tropical region from entering the Antarctic.
At the same time, its current also goes around the pole and is not blocked by the mainland. However, the Arctic Ocean is different. Its wind and current are confined to an inland basin.
Although the Arctic Ocean is a sea area surrounded by the mainland, there is a big gap surrounded by this continent in the Greenland Sea and the Norwegian Sea east of Greenland, which has become a main channel for the Atlantic Ocean to enter the Arctic Ocean. In a word, this kind of terrain, especially in winter, is conducive to the movement of warm air from the Atlantic to the north.
It can be seen that the topography determines their respective airflow and ocean currents, and it is this difference in airflow that strengthens the fundamental difference in climate in polar regions. There are penguins in Antarctica and polar bears in the Arctic. The South Pole is land and the North Pole is the Arctic Ocean.
Ten differences between north and south poles. 1, the temperature difference is obvious.
The lowest temperature in Antarctica is -89.2 degrees Celsius, which was measured at the Russian Oriental Station. The lowest temperature in the Arctic is minus 68 degrees Celsius.
The difference between the two is more than 20 degrees Celsius. 2. There is no country in Antarctica, nor does it belong to any country.
Some countries divide the Antarctic into sectors out of the desire for possession, claiming that the Antarctic belongs to them, but it has not been universally recognized by the international community and does not count. This is not the case in the Arctic. The territories of Norway, Denmark, Canada, the United States, Russia, Finland, Iceland and Sweden extend to its territory.
3. The representative animal of Antarctic is penguin, and the representative animal of Arctic is polar bear. It is said that there was a kind of penguin in the Arctic in the early years, which later became extinct.
In this way, there are no polar bears in the South Pole and no penguins in the North Pole. There is no permanent population engaged in production and life in Antarctic circle. Although some research stations insist on annual inspection, they have to be changed.
There are not only permanent residents in the Arctic, but also many cities, such as Tromso, Norway. 5. The icebergs in the Antarctic circle are relatively high, while those in the Arctic are relatively short.
Some icebergs in Antarctica are Big Macs, with a total area of 5,538 square kilometers, equivalent to the land area of 9 Singapore. The total amount of ice in Antarctica is also higher than that in the Arctic.
6. There is no military presence of any country in Antarctica, such as military bases and armed personnel. There are not only submarines cruising under the Arctic Ocean, but also military bases on some islands.
When the struggle between the United States and the Soviet Union was fierce, sparks flashed from time to time under the Arctic ice sea. On September, 2006, the PCM-54 missile launched by Russia from the nuclear submarine Yekaterinburg began to be launched in the Arctic Ocean.
7. There are no grass and trees in the Antarctic Circle, only plants with fresh moss and other low-level plants. Not in the arctic circle. In some places, there are not only grasslands, flowers and dense forests.
For example, in Longyearbyen, located at 78 degrees north latitude, there are knee-high bushes. 8. There are no schools in the Antarctic circle.
There are not only schools but also kindergartens in the Arctic Circle. For example, there are kindergartens in Svalbard, which is more than 78 degrees north latitude. 9. Antarctic mineral resources are abundant, but the international community has reached an agreement that they will not be exploited for the time being because of the need to protect the Antarctic environment.
Coal and oil reserves in the Arctic have been mined, some of which have existed for a hundred years. 10, the Antarctic is mainly a westerly belt around the Antarctic because of the ocean barrier. As an "island" exists, the pollution is light because it is difficult for people to reach it.
Due to convenient transportation, the Arctic region has a large population and serious pollution. In some parts of the Arctic, not only the dust from factories can be discharged into the sky, but also the traces of cars are left in the tundra, and the abandoned railway tracks and sleepers left by mining decades ago are still vivid.
Here are some samples I collected from the South Pole and the North Pole. Grassland located at 78 degrees north latitude of the North Pole.
Shell fossils from the Arctic. Stones from the South Pole.
The moss at 62 degrees south latitude in Antarctica is fresh. Five-star red flag brought back from the South Pole.
By comparing the photos I took in the North and South Poles, it is proved that there are considerable differences between the North and South Poles.