Describe the differences between the countries along the coast of Africa and the middle of the continent.

Countries along the coast of Africa tend to be wealthier and more developed than countries in the middle of the continent, due to the natural, economic, and logistical advantages that having a coastlines provides for a country, for example, by making it easier for coastal countries to engage in international trade than it is for inland, landlocked countries.

Another difference is that countries along the coast of Africa tend to be more urbanized while countries in the middle of the continent tend to be more rural, precisely because the higher economic activity of the coastal countries fosters urbanization processes.

heat from the core of the earth causes convection currents to occur in the mantle. these currents slowly move the crust around.

20: 5

explanation:

about 20% of the world's population lives in   southwest asia, but on less than 5% of the world's   land area.