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Added information about Abiotic oil to introduction
There are two main types of oil. One is derived from plants, such as [[olive]]s, and the other, [[petroleum]], is obtained from geological sources.
There are two main types of oil. One is derived from plants, such as [[olive]]s, and the other, [[petroleum]], is obtained from geological sources.
Whilst many [[liberal]]s and [[environmentalist]]s argue for investment in less efficient and more expensive sources of energy with the claim that petroleum sources will one day run out, recent research in to [[Abiotic oil]] has shown that this may not be the case.<ref>http://www.wnd.com/news/article.asp?ARTICLE_ID=59991</ref>
== Uses ==
== Uses ==