1. 
   Biofuels
   are those fuels derived from organic matter, such as plants, wood and their immediate by-products. The term also includes fuel produced by the action of micro-organisms on waste products like dung, compost and municipal rubbish
   Found op http://www.epaw.co.uk/EPT/glossary.html
   
   
2. 
   biofuels
   Fuels made from cellulosic biomass resources. Biofuels include ethanol, biodiesel, and methanol. ... (05 Dec 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?biofuels
   
   
3. 
   Biofuels
   Biofuels are two or more biofuel. things like wind power, solar power and wave/water power are biofuels. You can also get them from crops. ...
   Found op http://en.wikipedia.org/wiki/Biofuels
   
   
4. 
   biofuels
   The product of biomass conversion; can be used directly to provide heat or electricity.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   

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