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9 Cards in this Set

  • Front
  • Back
Species:
a similar group of organisms that can mate with each other and produce fertile offspring
Fossil
preserved remains of an organism that lived in the past
Fossil Record
the millions of fossils that scientists have collected
Adaptation
a trait that helps an organism survive and reproduce
Evolution
the gradual change in a species over time
Natural selection:
the process where individuals better adapted to their environment are more likely tosurvive and reproduce compared to others of their species
Fitness
an individual’s ability to survive and reproduce in a given environment
Variation:
any difference between individuals of the same species
Homologous structures:
similar structures that related species have inherited from a common ancestor