the development of new types of organisms from pre-existing types of organisms over time

process by which individuals that are better adapted to their environment survive and reproduce more successfully

a trait that makes an individual successful in its environment such as thick fur in cold climates

measure of an individuals hereditary contribution to the next generation

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Chapter 15-1.

vocabulary

Term	Definition
evolution	the development of new types of organisms from pre-existing types of organisms over time
strata	rock layers
natural selection	process by which individuals that are better adapted to their environment survive and reproduce more successfully
adaptation	a trait that makes an individual successful in its environment such as thick fur in cold climates
fitness	measure of an individuals hereditary contribution to the next generation