Africa's Geography Crossword Puzzle

QUESTIONS LIST: atlas: mountains that separate the coast from the sahara desert, sahara: desert that runs across the entire width of northern africa, sahel: dry, semi-arid region that is becoming desert, savanna: grassland in the middle of the continent, rainforest: tropical areas located on the central coast, kalahari: huge desert in the southern part of africa, nile: longest river in the world; flows north, congo: river that flows through the two largest rainforests in the world, tanganyika: one of the largest freshwater lakes in the world, niger: third largest river in africa; holds petroleum in its mouth