Question

What are formed when minerals replace all or part of an organism?

Answer 1

Answer:

Petrified fossils are formed when minerals replace all or part of an organism.

Answer 2

Petrified or permineralized fossils are fossils in which minerals replace all or part of an organism, thus making them rock-like. Another type of fossil is a carbonized fossil which is sometimes called a carbon film, because it is an extremely thin coating of carbon on rock.

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