
1) Alternative energy options
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https://www.crosswordclues.com/clue/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 on
http://en.wikipedia.org/wiki/Biofuels

Liquid fuels typically derived from harvested plant material, used primarily for transportation. These are different from fossil fuels, which are derived from transformed organic material residing in the Earth’s crust for millions of years.
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http://needtoknow.nas.edu/energy/glossary/

Alcohols, ethers, esters, and other chemicals made from raw biological material such as herbaceous and woody plants, agricultural and forestry residues, and a large portion of municipal solid and industrial waste.
Found on
http://www.cleanenergyresourceteams.org/glossary

Fuels made from cellulosic biomass resources. Biofuels include ethanol, biodiesel, and methanol. ... (05 Dec 1998) ...
Found on
http://www.encyclo.co.uk/local/20973

The product of biomass conversion; can be used directly to provide heat or electricity.
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http://www.encyclo.co.uk/visitor-contributions.php

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 on
http://www.epaw.co.uk/EPT/glossary.html

Liquid, solid, or gaseous fuel produced by the conversion of biomass. Examples include bioethanol from sugar cane or corn, charcoal or woodchips, and biogas from anaerobic decomposition of wastes.
Found on
https://www.encyclo.co.uk/local/22831

A renewable energy source that is derived from biomass (mainly plant) feed stocks
Found on
https://www.encyclo.co.uk/local/22834
No exact match found.