Why is northern africa much warmer than southern africa

Explanation:

The sun's rays are closest to the equator. There are much stronger there than (say) at the poles.

The further you move from the equation going south (in this case). the less strong the sun's rays are. So the northern part of Africa is very close if not right on the equator, while the southern part of the continent is much farther than the northern part.

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

answer; ///i believe that the correct answer is (a) the great depression