Fresh water, supply and demand
Fresh water, supply and demand
Most water on Earth is salty ocean water. Only about 3%3\%3% is fresh water, and most of that is trapped in ice, glaciers or underground stores rather than being easy to use.
Step-by-step lessons on Edexcel A GCSE Geography Water resource management. Each one builds up to exam-style questions. Build a solid grasp of core physical and human processes before tackling the evaluation- and decision-making-style questions used in the final papers, which carry the most marks.