Evolution

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Across
  1. 2. A feature that allows an organism to better survive in its environment.
  2. 4. methods of establishing the age of materials
  3. 7. atoms of the same element that differ in the number of neutrons they contain
  4. 8. The study of the past and present distribution of species.
  5. 10. Selection by humans for breeding of useful traits from the natural variation among different organisms.
  6. 11. The branch of biology that studies the formation and early development of living organisms.
  7. 12. The process in which inherited characteristics within a population change over generations such that new species sometimes arise.
Down
  1. 1. Theory saying that natural disasters have happened many times in Earth's long history.
  2. 3. all living things come from other living things
  3. 5. Most precise method for comparing DNA to other DNA to see how similar they are to each other.
  4. 6. living things could also arise from nonliving things
  5. 9. English natural scientist who formulated a theory of evolution by natural selection.