(a)[2]
Name the energy source for each method. For Fig. 4.1a, the energy source is ..................... For Fig. 4.1b, the energy source is .....................
(b(i))[2]
State two advantages of using renewable sources to generate electricity compared with a coal-fired power station.
(b(ii))[1]
State one disadvantage of using renewable sources to generate electricity compared with a coal-fired power station.