Africa has a diverse climate, with over 50% experiencing inadequate precipitation. The longest river in the world, the Nile, provides water for 95% of Egyptians and is formed from its two main tributaries, the White Nile and Blue Nile. Rift valleys formed as the eastern part of Africa pulled away from the rest of the continent. Mount Kilimanjaro is Africa's highest peak at over 4,600 meters. Coffee is Africa's second most profitable commodity after oil, with Ethiopia being its largest producer. The Sahara Desert is the largest desert in the world, and the Niger Delta in Nigeria is an oil-rich region that has faced environmental damage.

1. Chapter 18: Africa World Geography Mr. Allen

2. Climate