Ronak mehta
#3 (Alternative Energy Sources)
There are many examples of Alternative Energy Sources (AES) but these are two examples of the AES.
1) Biofuels
Biofuels are produced from biomass which is usually our green plants and it can be used for transport. This is one of the alternative energy source.
2) Hydrogen
Every one says that hydrogen will be the future source of energy. But they are wrong as it still will take a long time to be a alternative energy source. It also can carry energy like electricity.
This is our second alternative energy source.
Source: http://www.shell.com.sg/home/content/sgp/innovation/alternative_energy/