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Biofuels - Coggle Diagram
Biofuels
Benefits
Renewable
not run out any time soon
Have high-cost benefit
increase engine efficiency
reduce maintenance cost
emit less greenhouse gases
less damage to the enviroment
main forms
ethanol
bio diesel
Drawbacks
high cost of production
pose threats to food shortage, deforestation, fertilizer use
trend of using
be considered as alternative fossil fuels
be used more in the far distant future
origin
organic materials
Plants and animal waste