B 3.3 Listen again. What reasons does the speaker give for his opinion? Choose two from
this list.
1 A lot of extra pollution is produced by biofuels.
2 Biofuels use land that is used for food at the moment
3 More factories are needed to produce biofuels.
4 Biofuels produce less CO, than fossil fuels.
5 Rainforests are destroyed to provide land for biofuels.
6 Biofuels are also running out.