ErnaAldenPeriod4

Keyword**
 * Erna & Alden's Webpage on Biofuels
 * 1) Energy security
 * 2) Fossil fuels
 * 3) Biomass heating systems
 * 4) Biofuel
 * 5) Greenhouse gas
 * 6) Biomass
 * 7) Transesterification
 * 8) Agrofuel
 * 9) Biodiesel


 * Key phrases**
 * 1) We all need to access cheap energy, but the resources for it are unevenly distrubuted between countries.
 * 2) Fossil fuels or mineral fuels are hydrocarbons found in the earth's crust.
 * 3) Refers to the various methods used to generate heat from biomass.
 * 4) Biofuel is defined as liquid or gas transportation fuel derived from biomass
 * 5) Components of the atmosphere that contribute to the greenhouse effect.
 * 6) Living or dead biological matter, often plants grown as fuel
 * 7) The process of exchanging an alcohol by another alcohol
 * 8) Another word for biofuel.
 * 9) The oil that has been modified in a chemical process called transesterification in which the glycerine is removed from the oil.

Key Images