a) Using scientific journal articles or any source from public domain, select two different biomass or waste fuels. Extract the information of their density, ultimate analysis, and heating values (calorific values).

b) Respectively, calculate the feed rates of these two fuels required if a power plant with a capacity of 20 MW is to be built using 100% of these fuels. Compare the values. Consider plant efficiency of 35% when calculating the feed rates of the fuels.

c) Additionally, estimate the biomass/fuel storage capacity required, if the plant need to be run continuously for 48 hours in the emergency circumstances when the biomass/fuel supply is not available.

d) Briefly discuss the differences between the two selected biomass/waste fuels in terms of their reliability of supply.