The continental drift theory
Most of China’s ancient civilizations are hard to find mainly because of the harsh land scapes around mountains. And other areas.
Answer:
There have been three small railways, but none became part of the public transport network. The main reasons for the lack of railways are the small population, competition with automobile traffic, and the harsh environment.
Explanation:
Answer: D
Explanation: Population density is the concentration of individuals within a species in a specific geographic location. As Argentina has a lower population density, there are fewer people living per sq mile compared to Bangladesh.
The Ob River flows through B. Siberia, Russia. It is the world's seventh longest river.
