a. Discuss in detail the differences between the following gaseous and particulate air emission control processes and in each case, give two examples of typical industries producing a relevant air pollutant and how you would best apply the control process. Hint: Use the general approach illustrated under evaluation and selection of air pollution control. b. In light of the recent Energy Indaba held in Cape Town (79th March 2023), what are your thoughts between coal (fossil fuel) and renewable energy sources in the following: (i). Transitioning from coal to green energy sources (10 marks) (ii). Impact of air pollution of the two sources (10 marks) (iii). Impact on job creation/economy of the country (South Africa)