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evolution unit guide

Across
The variety of gene combination that exist within a population
The remnants of a structure that is no longer needed
Change in a species over time
History of life as documented by fossils
All of the individuals of a species that live in the same area
Down
Scientist who identify the prices of natural selection
Inherited traits that is selected for over time because it allows organisms to better survive in there environment
Elimination of a species from earth
Study of life using the fossil record
Study of the distribution of organisms around the world