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        | great "seas" of sand dunes in the Sahara |  | 
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        | finely ground soil deposited by a river |  | 
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 | Definition 
 
        | pictures and symbols used to record information in ancient Egypt |  | 
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 | Definition 
 
        | a fly in Africa, south of the Sahara, that spreads sickness (a deadly disease) |  | 
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 | Definition 
 
        | the study of the remains and ruins of past culture |  | 
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        | Term 
 | Definition 
 
        | a deadly disease spread by mosquitoes |  | 
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        | Term 
 | Definition 
 
        | to break away from one country to start another |  | 
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        | Term 
 | Definition 
 
        | periods when little rain falls and crops are damaged |  | 
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 | Definition 
 
        | regions surrounded by mountain ranges or other higher land |  | 
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        | Term 
 | Definition 
 
        | the uppermost layer of a forests trees where limbs spread out and block out the sunlight |  | 
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 | Definition 
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        | Term 
 | Definition 
 
        | the South African government policy of seperation of races, which began to disappear in the 1980s |  | 
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