World geographical divisions: Sub-Saharan Africa, eastern Europe and Russia, and an overview of the polar regions

1. Sub-Saharan Africa 1. Location and scope; Sub-Saharan Africa is the African region south of the Sahara Desert, the largest desert in the world. The equator passes through this area, spanning north and south. Most of the two hemispheres are located between the Tropic of Cancer and the Tropic of Cancer, with longitudes between 10w and 50e. The northernmost part of sub-Saharan Africa is the Sahara Desert. It borders the Indian Ocean to the east, the Atlantic Ocean to the west, and Antarctica to the south. The main countries are Sudan (the largest country in Africa), South Africa (the richest country in Africa), Somalia (a country infested with pirates), Congo (there are two countries called Congo), and Nigeria (the most populous country in Africa)

2. The horizontal outline of the African continent is very complete and single, the coastline is relatively straight, and there are few peninsulas and straits (the largest island is Madagascar, and the largest strait is the Mozambique Channel). The largest bay in Africa is the Gulf of Guinea. The largest peninsula is the Somali Peninsula in the east. Africa is a typical young continent, so Africa is dominated by plateaus, including South Africa, East Africa, Ethiopia and other plateaus. Africa is also called the "plateau continent". It is also worth mentioning the East African Rift Valley, which is The Great Rift Valley, the widest and longest in the world, extends from the Dead Sea in the north to the mouth of the Zambezi River. It is divided into east and west branches. Many lakes are formed in the rift valley, such as Lake Victoria and Lake Tanknika.

3. The main typical rivers in sub-Saharan Africa are the Nile River, the longest river in the world, and the Congo River, the second largest river in the world. The places where these two rivers flow have different climate types. For example, the Nile River flows through The place mainly has a tropical grassland climate and a tropical desert climate, so the Nile River can always only be the longest river in the world but not the largest river in the world. The flow of the Nile River is too small and may not be comparable to the Yellow River. Besides, the Congo River is the second largest river in the world and the second largest river in terms of flow rate. Its flow rate is much larger than that of the Nile River, but it cannot be compared with the Amazon River.

4. The climate of sub-Saharan Africa. The climate of sub-Saharan Africa is dominated by savanna climate and tropical desert climate. With the equator as the center, there are tropical rainforest climate, savanna climate, Tropical desert climate, Mediterranean climate. But in sub-Saharan Africa, there is only a part of tropical desert climate in Namibia and a little bit of Mediterranean climate in the south of South Africa.

5. The local products are very rich. The most famous ones are South Africa’s diamonds and gold, and of course the oil resources along the Gulf of Guinea. The local agricultural resources are also very rich. Timber, coffee, cocoa, livestock, etc. are all very important agricultural resources and have a major impact on Africa's economy.

6. Africa is the homeland of black people, so the vast majority of people in sub-Saharan Africa are black Africans. More than 90% of the population of sub-Saharan Africa is black. The life of the original inhabitants of Feizhou was mainly a primitive life of hunting and gathering. However, with the development of economy, people are paying more and more attention to economic development. Many countries in Africa have begun to take the first step of industrialization. With the development of social industry, Development and population increase have led to serious damage to Africa's ecological environment. Population and environmental problems have increasingly become barriers restricting Africa's economic development.

7. The tourism industry in Africa seems to be about the same in recent years, but I am talking about local special tourism. The main type of tourism is customary tourism.

2. Eastern Europe and Russia: 1. This area is located in the eastern part of Europe and the northern part of Asia. The terrain of this area in Eastern Europe is mainly plains, and the representative plain is the Eastern European Plain. , and this plain is an ice-stained plain, which is the result of glaciation. In the northern part of Asia, it is divided into two terrain areas, bounded by the Yenisey River, the West Siberian Plain in the west, and the Central Siberian Plateau and East Siberian Mountains in the east. When one includes the North Siberian Plain in the north.

2. Affected by glaciation, the outline of the sea and land in this area is fragmented, with many islands and peninsulas. This area is adjacent to the Arctic Ocean in the north, connected to Central Asia in the south, and adjacent to Western Europe in the east. , facing the Americas across the Bering Strait to the east. The main countries are the former Soviet Union and the Soviet Union.

3. The local climate type is single, mainly subarctic coniferous forest climate (temperate continental climate). Of course, there are also some climates in the south, such as plateau mountain climate, Mediterranean climate, etc., along the Arctic Ocean coast There are also some polar cold tundra climates, etc., but these are not the main climate

4. The local islands are mainly some frigid islands located along the Arctic Ocean, including some islands including Novaya Zemlya. In the east there is Sakhalin Island (Sakhalin Island) occupied by the Qing Dynasty. In terms of peninsulas, we want to mention the Chukotka Peninsula and Kamchatka Peninsula in Eastern Siberia

5. In Humanities What I want to say is that there are many plains in Eastern Europe, and agriculture is relatively developed, but it also varies from region to region. For example, Russia's agriculture is not very developed, which is due to Russia's unfavorable climate and planting industry, but the agriculture in countries such as Ukraine is not very developed. It is relatively developed because Ukraine is one of the three largest black soil distribution areas in the world. When it comes to the industry here, it is inherited from the Soviet Union. The heavy industry is quite developed, but the light industry is not so developed.

6. Famous cities include Minsk, Smolensk, Kiev, Moscow, Volgograd, St. Petersburg, etc.

3. Polar Region: Covering the Antarctic and Arctic regions 1. Arctic: Composed of the Arctic Ocean and Greenland, the population is Inuit, rich in resources, polar climate, the main animal is polar bear, the temperature Higher than Antarctica.

my country has the Yellow River Scientific Research Station 2. Antarctica is composed of the Antarctic continent. It has no permanent population and has a polar climate. The main animal is penguins. It is extremely cold and the temperature is higher than that of the Arctic