EVOLUTION

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Across
  1. 7. used by Charles darwin on his voyage.
  2. 11. he said that "individuals in a species are basically identical abd sprecies are unchanging."
  3. 12. the science of describing, naming, and classifying specie
  4. 14. used for determining the age or date of organic matter.
  5. 15. the intentional breeding of plants or animals.
  6. 16. generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point.
  7. 18. the study of pastlife.
  8. 19. proposed the idea of natural selection
  9. 20. the first one to used the phrase "survival of the fittest"
Down
  1. 1. used by scientist to devide the history of the earth into eons and eras.
  2. 2. is an organ or body part that appears in different animals and is similar in structure and location, but doesn't necessarily share the same purpose.
  3. 3. are similar structures that evolved independently in two living organisms to serve the same purpose.
  4. 4. the artificial manipulation, modification, and recombination of DNA to modify an organism.
  5. 5. remains of ancient organisms
  6. 6. the process whereby organisms better adapted to their environment tend to survive and produce more offspring.
  7. 8. genetic change over time
  8. 9. small evolutionary changes that accumulate in a population.
  9. 10. the theory that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed.
  10. 13. an island that helped charles darwin to develop his theory of natural selection and also helped investigate evolutionary changes in Darwin's finches.
  11. 17. in his theory he believed that giraffes once had short necks that got progressively longer as members of each subsequent generation stretched their necks as long as they could.