Landforms related to rivers and other watercourses include channel (geography), confluence, cut bank, …
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/geology/landforms/fluvial-landform/en.wikipedia.org.md
Africa is highly biodiverse; it is the continent with the largest number of megafauna species, as it was least affected by the extinction of the Pleistocene megafauna.