Study FIGURE 1.4 which is based on valley climates 141 Why was the site of Pietermaritzburg a poor choice for the development of a city? (1x1) 1.4.2 Give evidence from the article why pollution levels are much higher in winter (2x1) 1.4.3 Refer to the brown haze' (mixture of fog and polar ants) and answer the questions that follow 1.4.4 (a) Name the local wind that causes the brown haze' to disappear after 11:00 (1) 86 (2) (1x1) (1) (b) Give ONE characteristic of the Incal wind, named in QUESTION 14 3(a), which assists with the dispersal (removal) of the brown haze' (1x2) (c) Draw a labelled skotch to illustrate the development of the local wind that causes the brown haze' to disappear. The sketch must show the wind direction and ONE descriptive label (2x2) Why is the brown haze' a safety hazard for motor vehicle users? RE 1.4: VALLEY CLIMATE (2) (4) (2x2) (4) maritzburg is located in a valley. Air pollution concentration is at its worst during r. Pollutants are trapped in the valley and cannot be easily dispersed. This ​