The arrival of ethnic groups in the subregion greatly affects the population pattern. Since their presence inflates the population drastically compared to the normal pattern based on the mortality and fertility rates of the subregion. This also affects the population density of the region since sudden change in the number of people present in one place increases the density.
Answer: What is a convergent plate boundary?
Explanation:
A convergent boundary is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other causing a process known as subduction. The subduction zone can be defined by a plane where many earthquakes occur, called the Wadati–Benioff zone.
It would be the arctic circle.
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Rivers typically come from underwater springs. They can also form from mountains and hills from melted snow.