The document describes the climate and vegetation in Africa. It discusses the Sahara Desert, which covers 1.8 million square miles and experiences extreme temperatures and scarce rainfall. It also mentions the Kalahari Desert, which receives sporadic rainfall and supports some vegetation and wildlife. Most of Africa is covered by tropical grasslands suitable for grasses but not trees. The main rainforests are located in the Congo Basin along the equator, and feature a dense canopy over 150 feet tall and diverse plant and animal life.