Alexander Uribe, Pd3, Evolution

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Across
  1. 3. a shield for the ventral and dorsal parts of turtles (the order Testudines), completely enclosing all the vital organs of the turtle and in some cases even the head.
  2. 4. the degree of variation of living things present in a particular ecosystem
  3. 5. this occurs when plates move towards each other and collide
  4. 7. any of a breed of small hounds with short legs and smooth coats.
  5. 9. evolution represents the evolutionary pattern in which species sharing a common ancestry become more distinct due to differential selection pressure which gradually leads to speciation over an evolutionary time period.
  6. 12. the biological mechanism by which organisms adjust to new environments or to changes in their current environment
  7. 15. a nonhereditary change in an organism
  8. 16. the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
  9. 17. is a carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method, and which brings together many facts and hypotheses.
  10. 18. any songbird of the family Fringillidae, having a short stout bill for feeding on seeds and, in most species, a bright plumage in the male.
  11. 20. is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history.
  12. 22. the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
  13. 24. the science that deals with the earth's physical structure and substance, its history, and the processes that act on it.
  14. 25. is a theory of biological evolution
  15. 26. in biology, the preferential survival and reproduction or preferential elimination of individuals with certain genotypes
Down
  1. 1. structures like animal organs, tissues, or bones that may have been used by an ancestor but aren't anymore.
  2. 2. when independent species acquire similar characteristics while evolving together at the same time in the same ecospace
  3. 6. A group of islands in the Pacific off south America; owned by Ecuador; known for unusual animal life
  4. 8. is a organisms that are better adapted to their environment are best suited to survive and successfully reproduce.
  5. 10. the complete disappearance of a species from Earth
  6. 11. the birth, existence, or beginning; starting point
  7. 13. having the same typical structure and position
  8. 14. State of being separated from others.
  9. 19. how a new kind of plant or animal species is created
  10. 21. the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
  11. 23. the influence of closely associated species on each other in their evolution.