The convection cell is basically a self-contained in which there is a motion, where the hotter fluid is moving upward because of the lesser density, while the cooler fluid is moving downward because it is denser. This leads to constant circular movement of the magma in the mantle layer, and the one that moves upward is constantly creating big pressure on the crust above it, penetrating through the cracks in it or melting it and intruding. As the magma pushes upward, it manages to get through the thinner and cracked crust between the plates that move away from each other at the divergent boundary. The magma reaches the ocean floor and quickly cools off, creating new crust, and that continues constantly, with more and more magma coming out and more and more new crust pilling up, eventually creating an underwater mountain range of volcanic origin known as mid-ocean ridge.
The Great Wall stretches across North China from east to west for over 6,000 kilometers. It extends from the shanhai pass at the seaside in the Hebei province in the east to the Jiayu pass in Gansu province in the west.
Urbanization is the process in which the human population is increasingly more urban, that is, settled in the urban areas -in cities and in the suburbs. So urbanisation is the process of people moving to cities and to suburbs - the correct answer is:
A. a process in which an increasing number of people move to cities and suburbs
Option C
East Asia, South Asia, Europe, North America correct order from largest to smallest, according to their populations
<u>Explanation:</u>
Asia the largest in words of both area and population. Obtaining the most extensive in squared measures by a large boundary also sets Asia at an eminence population-wise. Asia currently has 62% of the world’s population. In which East Asia is highly populated than South Asia. Europe attains in at number three on population rankings, with a 2019 survey.
The United Nations Population Division assumes its population to diminish over the following decades due to lowering fertility measures. North America is where the pair of lists conflict in their rankings because this continent's population is not increasing as quickly as Asia's. North America is third in the area, nest to Europe based on population.
