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How has sea level changed over the last few thousand years?
HIV/AIDS
Human Immunodeficiency Virus (HIV) is a virus that attacks the immune system, and Acquired Immunodeficiency Syndrome (AIDS) is the most advanced stage of HIV infection, characterized by the occurrence of any of more than 20 opportunistic infections or HIV-related cancers.
Sub-Saharan African Countries
Nations located in the region of Africa that lies south of the Sahara Desert, often characterizing a geographic and socio-economic grouping.
Incidence
The allocation of the burden of a tax between buyers and sellers, or the effect of a policy or economic event on particular groups.
Industrial Market Countries
Nations with highly developed industries where the majority of economic activities are focused on manufacturing and services.
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