A system by which leadership for a culture group is defined by traditional and sometimes frustrating age-sex distinction patterns.
Pacific islands created by volcanoes.
An air mass descending and warming because of the increased pressure and weight of the air above.
High-tech industries: industries that use or make the most recently invented and technologically advanced products, such as computers.
A mountain range in South Asia that includes mount Everest, the world’s tallest mountain peak.
A concern with the historical patterns of human settlement, migration, town-building, and the human use of the earth.
HIV/AIDS deaths estimate the number of adults and children who died of AIDS during a given calendar year.