What is a drainage divide? a) a ridge or strip of high ground separating one drainage basin from another. b) the arrangement of a stream and its tributaries. c) the total area drained by a stream and its tributaries. d) the area where a stream flows into a lake or ocean.

A) A ridge or strip of high ground separating one drainage basin from another

Explanation:

A drainage divide is an area with an increase in height of the land or elevated terrain which seperates neighbouring drainage basins. This may be in a form of a single range of hills or mountains

people cluster in places that have rich soil, fresh water, and mild climates.

explanation:

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.