Question 2-Biomass A) According to the Department for Business, Energy and Industrial Strategy, Glasgow consumed almost 5000 GWh worth of natural gas for heating in 2019. Typical natural gas boilers have efficiencies of 90%. If Glasgow were to convert completely to biomass heating, what tonnage of biomass crops would be required and how much land area will be needed for each of the crops? High quality biomass boilers have efficiencies of around 92%. The following yields for selected energy crops can be found for Glasgow's area. (20 marks) Moisture content Calorific value of dried biomass (MJ/kg) Annual yield (tonnes/hectare) Willow 30% 18.5 12.9 Miscanthus 28% 18.0 17.3 Poplar 25% 18.75 16.0 B) Briefly discuss issues that might arise from having biomass providing heating for the whole city