(a) Study Fig. 8, a map showing pollution of a river in an MEDC. [Fig. 8 is a map of a river showing its direction of flow (north to south then east). Various sources of pollution are indicated along the river. The river's water quality is represented by different shading. Key: Sources of pollution: water treatment works, waste from sewage treatment works, waste from coal tip, waste from coal mine, waste from factory, polluted surface run-off from motorway, polluted run off from rubbish tip. Water quality: - Good (white) - Fair (light grey) - Poor (cross-hatch) - Bad (dark shading) Point A is at the top (north) of the river, where the quality is 'Good'. As the river flows south-east, various pollution sources enter it, and the water quality deteriorates, becoming 'Bad' at point B (south-east).] (b) Study Fig. 9 which shows newspaper extracts about three proposed new developments on an island in the Atlantic Ocean. [Fig. 9 presents three newspaper extracts describing proposed new developments: - Extract 1: NEW NORTH-SOUTH MOTORWAY PLANNED. Plans have been submitted to build a motorway across the mountains, through the valley of the White River. - Extract 2: PLANS ANNOUNCED TO BUILD NEW FISH PROCESSING FACTORY. A multi-national company plans to clear woodland and scrub to build a factory to process and can locally caught sardines. - Extract 3: LUXURY RESORT AND GOLF COURSE PROPOSED FOR SUMMER BAY. Plans have been submitted to build a resort and golf course on the sand dunes.]