Biofuels replaces oil.

• The image suggests that in the present days, biofuels have to be more used because the oil in the cars produces lots of pollution and if we replace them, contamination can be avoided.
• One thing that the images reminds me of is 
• There is an interesting debate about this topic because there are some people that believe that this replacement have to be made and there are some people that still defends the use of petrol. 
• Perhaps it could also link to science and technology and also to cultural diversity. Because without the use and advances of science this couldn't be discovered. and to cultural diversity because in very polluted countries maybe people will emigrate to another countries and there will be more cultural diversity.