Where is the population in africa least dense?

1) along the nile river
2) on the islands
3) in the deserts
4) along the coasts

3) In the deserts

Explanation:

In African countries like that of the Botswana are the least dense like in the Sub-Saharan Africa with a population of 2.1 million people with the country being arid. And has a population of about 9.6 persons per square mile and similarity the countries like that of the Mongolia and the Namibia all formed near the desertic conditions.

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

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