7. what is the difference in rivers between northern africa and sub-saharan africa?

Brief Explanations:

The primary difference lies in the climate-driven water volume and flow patterns. Northern Africa is dominated by the arid Sahara Desert, resulting in fewer permanent rivers; most are seasonal (wadis) that flow only after rare rainfall, with the Nile being a notable exotic exception. In contrast, Sub-Saharan Africa features diverse tropical and savanna climates, supporting numerous large, permanent, and high-volume river systems such as the Congo, Niger, and Zambezi, which are fed by consistent seasonal or year-round precipitation.

Answer:

Rivers in Northern Africa are mostly seasonal and scarce due to the arid climate, while rivers in Sub-Saharan Africa are generally permanent, more numerous, and carry significantly higher volumes of water due to higher rainfall.