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Change Over Time

TermDefinition
Species Group that breeds to produce fertile offspring.
Evolution Change in inherited traits over many generations.
Fossil Preserved remains or traces of ancient life.
Adaptation Trait helping an organism survive and reproduce.
Scientific theory Proven explanation supported by massive evidence sets.
Natural selection Survival and reproduction of the best-adapted individuals
Competition Organisms fighting for the same limited resources.
Sexual selection Choosing mates based on specific physical traits.
Coevolution Two species evolving in response to each other.
Fossil record Total collection of all discovered prehistoric remains.
Embryo Organism in its earliest stage of development.
Homologous structures Similar body parts inherited from common ancestors.
Extinct When every member of a species dies.
Vestigial organs Body parts that lost their original function.
Molecular clock Using DNA mutations to measure evolutionary time.
Relative dating Determining age based on surrounding rock layers.
Absolute dating Finding a fossil’s exact age in years.
Created by: user-2020372
 

 



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