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Fossils
They are called fossils.
Fossils reveal what organisms lived before us.
Fossils, although technically they are not preserved in the earths crust; the minerals in the bones and pore spaces have been replaced by other harder minerals which take much longer to weather.There are a number of different fossilization processes. See this link :How are Fossils Formed?
Earth's crust would be silica. Living things would be carbon.
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Fossils
By looking at remainders of living beings from the remote past; for example, fossils.
The vast majority of fossils are found in sedimentary rocks. Fossils are they key to understanding what living things used to be like.
Fossils Further evidence is derived from living organisms Bones
Fossils Further evidence is derived from living organisms Bones
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They are called fossils.
Fossils!