term1 Definition1term2 Definition2term3 Definition3
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fossil
The preserved remains or traces of living things.
sedimentary rock
The type of rock made from hardened sediment.
mold
A fossil formed when an organism buried in sediment dissolves leaving a hollow area.
cast
A fossil that is a solid copy of an organism's shape, formed when minerals seep into a mold.
petrified fossil
A fossil in which minerals replace all or part of an organism.
carbon film
A type of fossil consisting of an extremely thin coating of carbon on rock
trace fossil
A type of fossil that provides evidence of the activities of ancient organisms.
paleontologist
A scientist who studies fossils.
scientific theory
A well tested concept.
evoluton
The process by which living organisms gradually change over time.
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