WEIT 2012 Chap2
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WRITTEN IN THE ROCKS
What is a fossil?
A fossil is
How are fossils formed?
Where do scientists find fossils?
Scientists must brave a lot of dangers to hope finding fossils. Finding them demands a lot of time, it's expensive and risked. Indeed, scientists must face diseases, political troubles and inhospitable places, where the fossils are usually found, such as the Sahara Desert. They need also a lot of luck to find the place where a fossil is. Furthermore, once the scientists have discovered them, they must then extract, prepare and describe them.
Why are fossils so important for Evolution?
References
- retour à Evolution_3BIbDF10-11_2011/12
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