Original post by obviouslystudying how about their easy availability and that further biofuel research needs to be done. Also use of biofuels can result in higher food prices and hunger.
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Physics carbon dating
University of East Anglia. All Departments Open Wed, 30 Jan ' Careers in maritime Undergraduate. Sat, 2 Feb ' City and Collegiate Campus Undergraduate. When an organism, eg a tree, dies it stops taking in carbon dioxide.
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The amount of carbon in the wood decreases with time as it decays into nitrogen with a half-life of about years. By comparing how much carbon there is in the dead organism with the amount in a living one, the age of the dead organism can be estimated. The half-life of uranium is million years. When it decays it forms thorium which is also unstable.
Radiation Information - Carbon Dating
Finally, after a series of radioactive isotopes are formed it becomes lead, which is stable. The age of the rock can be calculated if the ratio of uranium to lead is known. As the rock gets older the proportion of lead increases.