theory of evolution

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Across
  1. 3. layers of rock
  2. 4. in evolutionary theory, a measure of an individual’s hereditary contribution to the next generation
  3. 6. Evolution: the process by which two or more related but reproductively isolated populations become more and more dissimilar
  4. 9. a heritable change in the characteristics within a population from one generation to the next; the development of new organisms from preexisting types of organisms over time
  5. 10. the trace or remains of an organism that live long ago, most commonly served in sedimentary rock
  6. 13. Selection: the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanisms of evolution
  7. 15. the study of geographical distribution of living organisms and fossils on Earth
  8. 16. the evolution of two or more species that is due to mutual influence, often in a way that makes the relationship more mutually beneficial
  9. 17. Structure: a structure in an organism that is reduced in size and function and that may have been complete and functional in an organism's ancestors
  10. 18. the process of becoming adapted to an environment; an anatomical, physiological,or behavioral trait that improves an organism’s ability to survive or reproduce
  11. 19. Age: the age of an object in relation to the ages of other objects
Down
  1. 1. Radiation: an evolutionary pattern in which many species evolve from a single ancestral species
  2. 2. 308
  3. 5. Structure: a anatomical structure in one species that is similar in function and appearance, but not in evolutionary origin, to another anatomical structure in another species
  4. 7. Structure: anatomical structures in one species that, compared to other anatomical species, originated from a single anatomical structure in a common ancestor of the two species
  5. 8. the evolutionary history of a species or taxonomic group; the relationships by ancestry among species or taxonomic groups
  6. 11. a principle that states that younger rocks lie above older rocks if the layers have not been disturbed
  7. 12. Evolution: the process by which unrelated species become more similar as they adapt to the same kind of environment
  8. 14. Selection: the selective breeding of organisms (by humans) for specific desirable characteristics
  9. 18. Age: the numeric age of an object or event, often stated in years before the present, as established by an absolute-dating process, such as radiometric dating