Call your doctor at once if you have any of these serious side effects: 1  severe headache; 2  bloody urine, painful urination; 3  fever, chills, body aches, flu symptoms; 4  chest pain; 5  feeling short of breath, even with mild exertion; or.  swelling of your ankles or feet.
Biofuel is a product produced from biomass. As the biofuel definition above suggests, this fuel is considered much cleaner than petrol/diesel alternatives. Biofuel is considered carbon neutral, as the biomass absorbs roughly the same amount of carbon dioxide during growth, as when burnt.
Biofuel is renewable because the process that generates the fuel is ongoing. Trees can be regrown, sewage can be converted into methane, and oil and alcohol can be generated from various plants. Biofuel takes carbon dioxide from the air as the original vegetation grows, and returns it when burnt, so it has a neutral carbon footprint.