Answer:
Option (C)
Explanation:
The outer core of the earth is liquid in nature, where they are comprised of dense molten rocks, which flows continuously due to the heat energy radiated from the extreme core of the earth, having a very high temperature. This flow of liquid rocks across the present magnetic field lines of force generates an electric current which subsequently produces the magnetic field. This process of producing magnetic fields is commonly termed as advection.
Thus, the correct answer is option (C).
Answer:
The answer is a highly developed nation with an aging population
Angola has a population of 21 million people. Sierra Leone has a population of 6 million people. Democratic Republic of the Congo has a population of 68 million people. <span>Cote d’Ivoire has a population of 20 million people. Therefore, Democratic Republic of the Congo has the highest population of the following African countries.</span><span />