chapter 3

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Across
  1. 9. An inherited trait that increases an organisms chance of surviving and reproducing in its environment
  2. 10. The resemblance of one species to another species
  3. 11. The change over time in populations of related organisms
  4. 12. Are body parts that have lost their original function through evolution
  5. 13. The impression of an organism in a rock
  6. 14. The science of the development of embryos from fertilization to birth
  7. 15. An adaptation that enables a species to blend in with its environment
Down
  1. 1. breeding The breeding of organisms for desired characteristics
  2. 2. A chart that divides Earths history into different time units
  3. 3. selection The process by which populations of organisms with variations that help them survive in their environment live longer
  4. 4. The study of similarities and differences among structures of living species
  5. 5. is made up of all the fossils ever discovered on Earth
  6. 6. fossil is the preserved evidence of the activity of an organism
  7. 7. A slight difference in an inherited trait of individual members of a species
  8. 8. A fossil copy of an organism in a rock