Theory of Evolution

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Across
  1. 3. time scale The standard method used to divide Earth’s long natural history into manageable parts.
  2. 5. selection The human practice of breeding animals or plants that have certain desired traits.
  3. 7. The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock.
  4. 9. selection The process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do.
  5. 10. A characteristic that improves an individuals ability to survive and reproduce in a particular enviroment.
Down
  1. 1. The process in which inherited characteristics within a population change over generations such that new species sometimes arise.
  2. 2. The death of every member of a species.
  3. 4. The occurrence of heredity or non heredity differences between different individuals of a population.
  4. 6. record The history of life in the gelogic past as indicated by the traces or remains of living things.
  5. 8. A charge in the nucleotide base sequence of a gene or DNA molecule.