What is renewable energy, what are renewable energy sources? (Explain by giving at least 3 examples of renewable energy sources). Discuss the advantages and disadvantages of renewable energy sources over fossil fuels. (10 Points) b. Write in detail the parameters that affect the biochar yield (You can create a table). Considering these parameters, in order to produce a biofuel that will be used in the energy sector, at 500C pyrolysis condition (equal reaction time and parameters), which product do you expect the biochar obtained from to be more efficient from the equal mass of walnut shell and lavender leaf biomass you have, and why? (10 Points)