A few years ago, there was a song called "Aurora", I only knew that it was talking about the beauty of the aurora, and I didn't know why this song was called Aurora, but in the past two days, I found the answer in "DK's Wonderful Base Encyclopedia", and I also unlocked a lot of interesting knowledge around it.
It turns out that the aurora was seen as the ancient Roman goddess of dawn, and the goddess's name was Aurora. There are aurora borealis in both the North and Antarctic Circles, and the natural glow of the aurora near the Polar Circle at night looks like a beating flame or band of light.
The color of the aurora may be blue, yellow, green, purple, etc., because the color is uncertain, which also adds to the mystery of the aurora. The color of the aurora is determined by the sun's energetic band particles and which gases in the Earth's atmosphere collide. This is the reason why there are aurora lights in the polar regions.
In fact, the North and South Poles themselves have mysterious properties, because the environment of these two regions is special, whether it is for humans or animals, they are not very friendly, so many people cannot go to the North and South Pole regions, and it is precisely because they can't get there that people will be curious. In addition, Antarctic penguins, polar bears, etc. can now be seen in many big cities, which makes people want to know the secrets of the polar regions even more.
In the Antarctic and Arctic regions, because they are far from the equator, the sun can shine for a limited time, so the polar regions do not see the sun for six months a year, and the creatures living here have to endure half a year of darkness. But these animals are used to living in such an environment, and they have plenty of food in the winter, but they are hungry in the summer.
To survive in extreme environments, animals need two qualities:
First of all, it must be able to withstand the cold, foxes, rabbits, bears, walruses and other animals in the polar regions either have very thick fur or a very thick fat layer. The outer layer of the king penguin's feathers is relatively hard, the inner layer has fluffy feathers, and the outer layer of feathers is short, but the layers are overlapped, so that the overall waterproof of the feathers is very good, and the penguin's body can stay dry and warm for a long time.
Secondly, we must learn to camouflage, there is not much place to hide in the polar regions, and animals must learn to hide themselves if they want to survive, so many animals will evolve into white, and after merging with the snow, the probability of being discovered will be much smaller. Therefore, whether it is a rabbit, a fox or a weasel, they are all snow-white in winter.
For children, polar penguins are the "stars", and every time they see chubby penguins in the zoo, they are walking around, and the expressions on their faces are full of joy. In fact, there are 18 species of penguins in the world, five of which live in Antarctica.
The fastest swimmer is the Gentoo penguin, which swims at speeds of up to 35 km/h. The largest penguin on the planet is the emperor penguin, weighing about 40 kilograms and standing 115 centimeters, which is equivalent to a four or five-year-old child. Most penguins in Antarctica are hat-banded penguins, with a black feather on their heads, which looks like they have a hat, and their bodies are not too big or small, they are ordinary, but they are all cute, just like most of us ordinary people, although they are not very conspicuous in the crowd, everyone has their own cute points.
After talking about the cute little animals that the polar region can't help but say, do you think there are cities in the polar regions?
In fact, there are cities in the Arctic region, in the north of the Arctic Circle, there are 10 cities with a population of more than 30,000, of which Murmansk, Russia is the largest city, the minimum temperature in Murmansk can reach about minus 40, people travel very inconveniently, they can only take planes or boats, there are no trees in the city, there will be polar day and polar night every year, but everything has advantages and disadvantages, people living in the Arctic Circle can see the aurora, and can also enjoy ice and snow sports.
With the development of science and technology, people's understanding of the polar regions is becoming more and more comprehensive, but also because more and more people go to the polar regions to explore, which has a certain impact on local animals and the environment.
The book "DK's Wonderful Base Encyclopedia" can uncover many secrets about the polar regions buried in the hearts of adults and children, and also tell everyone that protecting the earth's environment is closely related to each of us and is everyone's responsibility.