1 This question is worth 15 marks. In Chapter 6.1.2 of the Part 2 text you learned a little about fossil-fuel-fired power stations and Activity 8.1b of the online material looked at using waste as an energy source. You may need to refer to the remainder of Chapter 6 and part of Chapter 7 for Parts (b) and (c). A utility company is considering adapting a redundant coal-fired power station so it can burn a combination of wood grown in UK and North America plantations, as well as waste wood such as broken pallets and wood from demolition sites. a.Explain in around 100 words why burning wood has advantages over coal in respect of greenhouse gas emissions. (4 marks) b.If the heat of combustion of the wood is 8.8 MJ kg-1 and the power station will generate electricity with an efficiency of 30% when burning wood, calculate how much electricity can be produced (in units of MW) if the station burns 15 tonnes of wood per hour. Give your answer to 2 significant figures. (6 marks) c.Calculate how much wood would need to be burned per hour to maintain an electrical output of 150 MW from the power station