IB ESS HL 4.2.16 Transboundary Disputes Question Bank

more people in world and so less freshwater to share;
freshwater being used from fossil resources/aquifers at unsustainable rate; development needs more/uses more water;
global warming is making some areas drier; pollution of freshwater is limiting available source;
rivers cross international boundaries;
uneven distribution of water leaving some areas with a limited/insufficient supply;
control of water means control of agriculture/agriculture profit/food resources;

Marking guidance:

Award [2 max] where one reason is explained in sufficient depth.
Also credit responses that cover two valid reasons.
Do not award marks where a reason for water scarcity is not given.