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human history society origin civilization species sapiens agricultural revolution
population pyramids Demographic Transition Model Populations in transition Patterns and Change ib_geog2009
population increase 7 billion National Geographic ib_geog2009 Populations in transition Patterns and Change
PBS Nova affluence China World in the Balance China Revs Up pollution Patterns in environmental quality and sustainability Patterns in resource consumption Disparities in wealth and development ib_geog2009 Populations in transition Patterns and Change
People Paradox PBS Nova world population documentary Japan Populations in transition ib_geog2009
Mark Russo
IB History teacher at Academia Cotopaxi in Quito, Ecuador