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    GCSE Exam GCSE Chemistry
                    
                        4.10.1.1 Using the Earth's resources and sustainable development
                    
                                    
                
                    
                        4.10.1.2 Potable water
                    
                                    
                
                    
                        4.10.1.3 Waste water treatment
                    
                                    
                
                    
                        4.10.1.4 Alternative methods of extracting metals (HT only)