development volcano gap narrowing gap aid trade bridging geography bridging development gap 2010 haiti earthquake year 7 lesson activity hazards diagram labelled eruption montserrat decision making activity eye witness reports eyjafjallajkull iceland chile consequences haiti comparison causes progress development gap obstacles millennium goals debt structural adjustment barriers bottom up smart aid top down urbanisation ledc settlements pulls push pull model pushes favelas mind map players observed lesson a2 mini-ofsted evidence essays chipping campden retired spain migration rural idyll cotswolds settlements living spaces gcse edexcel b rural unsustainable urban cebu coral threats sustainable management reef coral triangle plate tectonics haiti earthquake 12 january
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