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Change over time

evolution

TermDefinition
Species Similar organisms that can interbreed and produce fertile offspring.
Evolution Change in a population's inherited traits over generations.
Fossil Preserved remains or traces of ancient organisms.
Adaptation Inherited trait enhancing survival and reproduction.
Scientific Theory A widely accepted, well-tested explanation for natural phenomena
Natural Selection Differential survival/reproduction based on environmental adaptation.
Competition Struggle between organisms for limited resources.
Sexual Selection Selection based on traits favoring mating success.
Coevolution Reciprocal evolution of two interacting species
Fossil Record Total collection of known fossils providing historical evidence of life
Embryo Earliest developmental stage of an organism.
Homologous structures Similar structures inherited from a common ancestor.
Extinct A species with no remaining living members.
Vestigial organs Non-functional, remnant structures from ancestors.
Molecular clock Using DNA mutation rates to estimate evolutionary divergence time.
Relative dating Determining age by comparing fossil layer positions
Absolute Dating Determining a fossil's age in years via radioactive decay
Created by: user-1997175
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