Basin
A natural depression on the earth's surface, typically containing water
Aquifer
A body of permeable rock that can contain or transmit groundwater
Canopy
Top layer of a rain forest, where the tops of tall trees form a
continuous layer of leaves
Berlin Conference
Major European powers negotiated and formalized claims to territory
in Africa
Pandemic
A widespread epidemic affecting a large part of the population
Rai
A form of popular Algerian music with traditional Arabic vocal
styles, some elements of popular Western music and with outspoken,
often controversial lyrics
Ashanti
A tribe and region in ghana
Commodity
A raw material or primary agriculture product that can be bought and sold
AIDS
A disease in which there is a severe loss of the body's cellular
immunity, greatly lowering the resistance to infection and malignancy
Malaria
A mosquito-born disease caused by a parasite, spread by mosquitoes.
Escarpment
A long, precipitous, clifflike ridge of land, rock, or the like,
commonly formed by faulting or fracturing of the earth's crust
Oasis
A fertile spot in a desert where water is found
Desertification
The process by which fertile land becomes desert, typically as a
result of drought, deforestation, or inappropriate agriculture
Cash crop
A crop grown to be sold
Masai
A member of a pastoral people living in Tanzania and Kenya or the
Nilotic language of the Masai
Stateless society
A society that is not governed by a state or especially in common
American English, has no goverment
Apartheid
A policy or system of segregation or discrimination on grounds of
race in South Africa
Diversify
To make or become diverse or varied
Cholera
An infectious and often fatal bacterial disease of the small
intestine, typically contracted from infected water supplies and
causing severe vomiting and diarrhea
Tuberculosis
An infectious bacterial disease characterized by the growth of
nodules in the tissues, especially the lungs