Compare and illustrate the similarities and differences between the two polar regions at least three

Shape: The entire Arctic region is a floating ocean, the Arctic Ocean (60% of the total area), surrounded by permafrost in Asia, Europe and northern North America. The total area is 21 million square kilometers, which is about 1 25 of the total area of the earth.

The land area within the Arctic Circle is about 800 square kilometers.

The Transantarctic mountain range divides the Antarctic continent into two parts. East Antarctica, which is larger, is an ancient shield and quasi-plain, and the Transantarctic Mountains stretch to the edge of the shield; West Antarctica is a small folded belt consisting of mountains, plateaus and basins. There is a subsidence zone between the east and west that stretches from the Ross Sea to the Weddell Sea.

With an average elevation of 2,350 meters, the Antarctic continent is the highest continent on Earth. The highest point, Mount Vincennes in Mary Bird Land, is 5,140 meters above sea level. The continent is almost entirely covered with snow and ice, and the ice layer is of average thickness.

Climate: The climate is cold, the average temperature of the coldest month in the Arctic sea area can reach -40--20, and the warm season is mostly below 8. The lowest temperature on record observed in Siberia is:

Antarctica's climate is characterized by extreme cold, windy and dry. The average annual temperature of the whole continent is 25, the average temperature of the inland plateau is about 56, and the extreme minimum temperature has reached 89 8, which is the coldest land in the world. The average wind speed of the whole continent is 17.8 meters per second, and the coastal ground wind speed often reaches 45 meters per second, and the maximum wind speed can reach more than 75 meters per second, making it the strongest and windiest region in the world.

Precipitation is less than 250 mm in most areas, and only on the continental fringe it is about 500 mm. The average annual precipitation of the whole continent is 55 mm, and the annual precipitation in the interior of the continent is only about 30 mm, and there is almost no precipitation near the pole, and the air is very dry, which is called the "white desert".

1) The geographical location is different. (2) The distribution of species is different. (3) Different climatic conditions. (4) The geological structure and composition are different!

The polar region refers to the South and North pole regions of the Earth, and they share the following common characteristics:

1.Extreme climate: The climate in the polar regions is extremely cold, with snow and ice covering most of the ground, the average temperature is extremely low, and extreme weather phenomena such as polar winds and blizzards are common.

2.Duration of light: The time of daylight in the polar regions varies significantly with the seasons, with long daylight in summer and long nights in winter.

3.Lack of biological resources: Due to the cold climate and poor land, the biological resources in the polar regions are very scarce, and only a very small number of organisms can survive in this environment.

4.Special geographical location: The polar regions are located at opposite ends of the earth, and the geographical location is very special, and the axis of rotation of the earth also passes through here.

5.Fragile environment: The environment in the polar region is very fragile and sensitive to human interference and pollution, so it needs to be specially protected.

The common characteristics of the polar regions are extreme weather conditions, very dry or wet, cold or hot, high or low altitude. In addition, they also have a special geological and biological environment, and their soil and vegetation have unique characteristics. Most of these regions are located on the edge of the continent or in the wilderness, and due to their geographical location, they have a low degree of socio-economic development and are more difficult to exploit resources.

In addition, these areas are particularly vulnerable to natural disasters, such as floods, hurricanes, etc.

The polar regions refer to the North and South Poles, which sit at opposite ends of the Earth and share many common features.

First of all, the climate in the polar region is extremely cold, in the Arctic, the temperature is generally below freezing, while in the Antarctic, the temperature throughout the year is generally below freezing, because the temperature is cold, so the plant growth is slow, and there is almost no vegetation.

Secondly, the lights in the polar regions are extremely special, in the North Pole, there will be auroras in winter, while in Antarctica, daylight will be as long as 24 hours, and in summer, in Antarctica, there will be auroras.

In addition, the flora of the two poles is very different, with pines, fir and other frost-resistant plants in the Arctic and mosses, algae and phytoplankton in the Antarctic.

Finally, the animals of the two poles are also very different, with animals such as reindeer, seals and sea lions in the Arctic and penguins, seals and dolphins in the Antarctic.

In conclusion, the cold climate, special lights, different plant characteristics, and a large variety of animal species in the polar regions are all common characteristics.

The common feature of the polar regions is extreme climatic conditions, such as cold and extreme sun exposure. This is due to the fact that the axis of rotation of the geosphere deviates from the sun, so that the polar regions receive less solar radiation, which leads to its special climatic conditions. Wheel chain.

The polar regions usually have harsh natural and economic conditions, such as cold and lack of arable land in the polar regions, and high temperatures, humidity and disease in the first concession areas of tropical rainforests. In addition, these areas are also prone to social problems, such as poverty, crime, and lack of educational and medical resources.

The characteristics of the natural environment in the polar regions can be summarized into the following three characteristics:

1.Extreme climatic conditions: The climatic conditions in the polar regions are extremely harsh, with long, cold, dry, extremely high wind speeds in winter, and extremely low temperatures in the summer, coupled with the influence of polar night and day, making the polar regions an extreme environment completely different from other regions.

2.Unique ecosystems: Due to extreme climatic conditions and topography, the polar regions form a unique ecosystem.

In the Arctic region of Khukidse, glaciers, permafrost and oceans are the main landscapes and ecosystems in the region; In Antarctica, it is a unique ecosystem of glaciers, frost flowers and tundra.

3.Strong Earth's magnetic field and rings: The polar regions are among the most intense regions of the Earth's magnetic field.

At the same time, the wonders of the aurora can be seen at both poles. Aurora is a natural wonder that is a unique natural spectacle caused by charged particles brought by the solar wind striking the Earth's magnetosphere, which can be clearly observed in the polar regions.

In short, the polar region has extremely harsh natural environmental characteristics, so it is also one of the most unsuitable places on earth for human life. However, in this inaccessible and desolate environment, it has also given birth to unique natural landscapes and ecosystems.

The polar regions are cold all year round, and even in the warm season, they are cautious and cry out in the snow. In contrast, the environment of the Antarctic region is more harsh, known as the "cold pole" on the earth, because most of the area is covered with thick ice, known as the "ice and snow plateau", and is also known as the "white desert" and "wind reservoir" on the earth

Antarctica is the southernmost place on Earth, the range is the Tropic of Capricorn (23 degrees 26 minutes south latitude) and the area south of it, where it is the coldest place on earth, where the cold wind is howling, the temperature is very low, the ice and snow cover all year round, a silver-white world, the average annual temperature is only -56According to the survey, the average thickness of the ice in Antarctica is 1,700 meters, and the thickest point can reach 4,000 meters, and the total volume of glaciers is about 28 million cubic kilometers.

But in 2002, glaciologists from NASA used a laser altimeter to measure the thickness of six glaciers in Antarctica, according to the British magazine New Scientist on September 23. Measurements show that these glaciers are melting at twice the rate they did in the 90s, melting 250 cubic kilometers per year, 60 more than their annual snow coverThese glaciers melt into water, causing sea level to rise by 0.2 mm per year.

Antarctica is also rich in coal and non-ferrous metals.

The Arctic is the northernmost point of the Earth, the extent is the Tropic of Cancer and the area north of it, the Arctic has a small land area, mostly the Arctic Ocean, and the ice thickness is about 2 4 meters. Scientists warn that all Arctic glaciers will melt by 2040.

The Arctic is rich in oil resources.

Answer B: This question mainly tests the knowledge of the polar region. The common physical geographical characteristics of the polar regions are high latitude, low temperature, and ice and snow coverage.

Mid-latitude refers to the latitude zone between 30 degrees and 60 degrees north and south latitudes.

The low latitude between 0 degrees and 30 degrees north and south latitudes, the middle latitudes between 30 degrees and 60 degrees, and the high latitudes between 60 degrees and 90 degrees.

So it's right that both polar regions are located at high latitudes.

The Great Wall Station is located at 62 degrees 12 minutes 59 seconds south latitude, which is not in the Antarctic Circle, but it is also at high latitudes (between 60 degrees and 90 degrees).

The polar region is a broad concept with no clear boundaries. If only Antarctica is taken as the Antarctic region and the Arctic Ocean is the Arctic region, then this sentence is not correct, as the landlord said, China's Great Wall Station in Antarctica is already located outside the Antarctic Circle, which belongs to the mid-latitude region, not the high-latitude region.

There is a permanent population in the Arctic, so it is a mistake;

The Antarctic region has the lowest average temperature in the world, so b is false;

The Antarctic region is the richest freshwater resource in the world, so it is true;

The Antarctic region is rich in coal resources, so d is false

Therefore, c