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Evolution

(biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms

Variation

(biology) an organism that has characteristics resulting from chromosomal alteration

Artifical selection

selection by humans for breeding of useful traits from natural variation among different organisms

Adaption

inherited characteristic that increases an organisms chance of survival

Natural selection

process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest

Extincion

species dissappears from all or part of its range

Fossil

the remains (or an impression) of a plant or animal that existed in a past geological age and that has been excavated from the soil

Fossil record

information about past life, including the structure of organisms, what they ate, what ate them, in what environment they lived, and the order in which they lived

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