Which of the following is not a limitation of biomass as a source of energy?
1
Biomass is a relatively expensive source for generating energy, both in terms of producing the biomass and converting it to ethanol.
2
The main ingredient of biofuel i.e, ammonia is harmful to the environment.
3
If the biomass is directly burnt, it may contribute to global warming and increase emissions causing environmental pollution.
4
The bio-fuel is not as energy-efficient as petrol.