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Fri, 3 Oct 14:41:48 GMT17

 
The AlertNet Challenge
1 of 6

QUESTION 1
Which phenomenon has been linked to the initial spread of HIV among humans in sub-Saharan Africa?
The emergence of modern cities
The illegal trade of ivory
An increase in the number of community festivals


URL: http://www.alertnet.org/quiz/122304426470.htm

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