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Chapter 4.1 and 4.2
Chapter 4 section 1 and 2
Term | Definition |
---|---|
fossil | the preserved remains or traces of living things |
sedimentary rock | the type of rock that is made of hardened sediment |
mold | a fossil formed when an organism buried in sediment dissolves, leaving a hollow area |
cast | a solid copy of the shape of an organism |
petrified fossil | a fossil in which minerals replace all or part of an organisum |
carbon film | a type of fossil cinsisting of an extremly thin coating of carbon rock |
trace fossil | a type of fossil that provides evidence of the activities of ancient organisms |
paleontologist | a scienctist who studies fossils to learn about organisms that lived long ago |
scientific theory | a well-tested concept thet explains a wide range of obervations |
evolution | the process by which all the different kinds of living things have changed over time |
extinct |