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This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers.

Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things. The half-life of carbon-14 is approximately 5,730 years. dinosaurs the evolution alleges lived millions of years ago.

Scientists believe that about 4.3 billion years ago, water already existed on Earth's surface.

However, what isn't known is when the earliest life emerged.

Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air.

This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock.

(Dave Weatherall) While there is some debate as to whether or not the the age of the rock in the Nuvvuagittuq Greenstone Belt is 3.8 billion years old or 4.3 billion years old, Jonathan O'Neil, assistant professor at the University of Ottawa's Department of Earth and Environmental Sciences, believes it to be on the older side.

Alesi, as the fossil was nicknamed, also has a relatively large brain cavity of around seven tablespoons, which is more than double that of its contemporary monkeys.The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating.This restriction extends to animals that consume seafood in their diet. As an amateur astronomer, Nicole can be found looking up at the night sky appreciating the marvels of our universe.She is the editor of the Journal of the Royal Astronomical Society of Canada and the author of several books.

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