1 A2/A-level Geography resources Search within results Go How ratings and recommendations work Apply Filter resourcesClear all filtersLevelClear filter A2/A-level SubjectClear filter Geography Exam board Edexcel TopicClear filter Affects of human activity on water pollution, over-exctraction and salt-water incursion Resources Revision Notes GEOGUNIT: Water- California crisis A2/A-level, Geography Revision notes Search again