What are the rich mineral resources in Beijing-Tianjin-Tangshan area? What is the pattern of population growth in the United States? Briefly describe the direction and reasons of population migration

What are the rich mineral resources in Beijing-Tianjin-Tangshan area? What is the pattern of population growth in the United States? Briefly describe the direction and reasons of population migration in Henan Province. Rich in natural resources. With proven reserves accounting for 40% of the country's iron ore and oil resources, as well as a large area of coastal beaches, the natural conditions are superior.

In recent years, the population growth in the United States has accelerated, mainly due to the increase in immigrants and the increase in children born to immigrants. A demographer at the Pew Hispanic Research Center in the United States estimates that half of the 654.38 billion people in the United States are immigrants or their children born in the United States. Without these people, the population of the United States would be 247 million, the Hispanic population would be 654.38+06 million instead of the current 44 million, and the Asian population would be only 2 million instead of the current 654.38+03 million.

American population growth depends on immigration.

At present, the population of the United States ranks first among developed countries after China and India, and the population of the United States is the fastest growing among industrialized countries, with an annual increase of about 2.8 million people. However, the average population of the United States is only 33 people per square kilometer, which is still "empty" compared with 120 people in EU countries and 360 people in Japan.

Population migration in Henan is mainly concentrated in Beijing, Shanghai, Guangzhou, Shenzhen and Xinjiang.

Because Henan is located in the Central Plains, with convenient transportation and convenient roads and railways extending in all directions, people from Henan can be seen all over the country, especially in the three industrial zones of Beijing-Tianjin-Tangshan, Shanghai-Nanjing-Hangzhou and Pearl River Delta. Migrant workers in Henan are evenly distributed throughout the country. Unlike Hebei, Shanxi and Northeast China, most of them only choose Beijing, unlike Anhui, Jiangsu and Zhejiang, which only choose Shanghai, and unlike Sichuan, Yunnan, Guizhou, Guangxi and Hunan, they are concentrated in Guangzhou and Shenzhen.