Sources of water; components of demand; water stress
Freshwater comes from several sources, and people use it for different reasons. When demand for water exceeds available supply, a region experiences water stress.
Real World
The Middle East faces severe water stress — Saudi Arabia withdraws water from the Ogallala-equivalent Saq Aquifer at rates that cannot be replenished, forcing the country to import over 80% of its food rather than irrigate crops locally.
Exam Focus
For 'explain' questions on water stress, always link demand figures to supply availability — a comparison scores higher than description alone.
Essay Framework
Use PEEL to structure every paragraph. Tap each step for guidance and an example.
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