Conservation and Evolution

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Across
  1. 2. trait that helps an organism to survive and reproduce. Finches’ beak structures help obtain food
  2. 4. keystone species that influences the survival of many other species in a ecosystem (sea otters, urchins, and kelp)
  3. 8. changes from 1 species into another
  4. 11. happens rapidly in a few generations, explains gaps in fossil record. Best example is antibiotic resistant bacteria
  5. 12. healthy population has a lot of diverse traits (alleles). The more genes available to recombine the easier it is for species to weed out the bad genes and keep individuals healthy. Food crops that do not have a lot of diversity are prone to disease (potato famine, corn in US
  6. 14. Natural process, disappearance of all members of species from the earth
  7. 15. in danger of becoming endangered
  8. 16. he preserved remains or traces of an organism that lived in the past.darwin saw fossils of organisms that resembled living species. What happened to the other ones?
  9. 17. species inherited the same genes from a common ancestor and that is why they look so similar
  10. 18. group of similar organisms that can mate with each other and produce fertile offspring
Down
  1. 1. similar structures that related species have inherited from a common ancestor. Same bone and muscle structure and similar function.
  2. 3. happens over a very long period of time
  3. 5. Scientific Theories are based on facts that have been tested and analyzed by scientists. They cannot be proven as pure fact because of the limits of human science to test/view the facts (think of the theory of plate tectonics and convection currents in the mantle). A theory in the regular dictionary is a guess. Evolution is a Theory with a capital T.
  4. 6. changes within a species
  5. 7. things that no longer have a purpose but we still have them (appendix). We are in the process of evolving not to have these anymore
  6. 9. (Darwin’s theory, The Theory of Evolution) — process by which individuals that are better adapted to their environment are more likely to survive and reproduce than other members of the same species.
  7. 10. on danger of becoming extinct
  8. 13. number of DIFFERENT species in an area