study guide for chapter 5

11 terms by izzy1599 

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Mr. Willie

Fossils

The preserved remains or traces of an organism that lived in the past.

Variation

Any difference between individuals of the same species.

Natural Selection

Process by which individuals that are better suited to their environment survive and reproduce most successfully.

Evolution

A gradual change in a species over time.

Relative Dating

A technique used to determine which of two fossils is older.

Absolute Dating

A technique used to determine the actual age of a fossil.

Adaptation

A trait that helps an organism survive and reproduce.

Charles Darwin

English natural scientist who formulated a theory of evolution by natural selection.

Sediment

Small, solid pieces of material that come from rocks or living things.

Geographic Isolation

Occurs when some members of a species become cut off from the rest of the species.

Homologous Structures

Body parts that are structurally similar in related species.

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