Extremely hot, forms in mantle, known as lava in surface, contains dissolved gasses
C pass through points W and X
(please could i have best answer i'm trying to rank up?)
All of the following are reasons why many rivers are unnavigable in Africa except the Nile is too shallow. The correct option among all the options that are given in the question is the third option or option "C". The Nile is not a shallow river but a huge river and so it is hard to cross. I hope the answer helps you.
An ancient gift of the gods
