Variations , Traits an organism developes, Speciation, Development of a new species, Population, All members of the same species in an area, Migration, Movement of species in and out of a population, Naturalist, A person who studies nature by observing plants and animals, Fossils , Remains of living things from long ago., Gene Pool, All the genes in a population, Mutation, A change in the structure of gene or chromosome, Natural Selection, Process where well adapted organisms survive to reproduce.

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