Ch.18 crossword puzzle

An area drained by a major river and its tributaries
The world’s longest river flowing over 4000 miles through the Sudan Basin into Urganda, Sudan and Egypt
A long, thin valley created by the moving apart of the continental plates
A volcano in Tanzania in Africa, also highest peak in Africa
A steep slope with a nearly flat plateau on top
The largest desert in the world, stretching 3000 miles across the African continent
An underground layer of rock that stores water
A place where water from an aquifer has reached the surface
An area east of Africa, containing some of the best grassland in the world
The area encompassing the top of the trees in the a rain forest about 150 feet
A dam on the Nile River in Egypt, completed in 1970, increased Egypt’s farmland by 50%
Delta of the Niger River and an area of Nigeria with rich oil deposits
A narrow band of dry grassland, running east to west on the southern edge of the Sahara
An expansion of dry conditions to moist areas that are next to deserts
A dam on the Nile River in Egypt, completed in 1970, which increased Egypt’s farmable land by 50%
Loose sedimentary material containing very small rock particles
Eighth leading oil exporter in the world
Disease caused by the increase number of mosquitoes
Trees in west Africa that help build up dry land in swamps
Where major rain forest of Africa sits on