Change over Time

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Across
  1. 3. a trait that increases an organism's ability to survive and reproduce
  2. 5. the process by which individuals are better adapted to their environment are more likely to survive and reproduce more than other members of their species
  3. 6. the preserved remains or traces of an organism that lived in the past
  4. 8. the process of change over time
  5. 9. a well tested concept that explains a wide range of observations
  6. 10. species evolve during short periods of rapid change and then don't change much
Down
  1. 1. any differences between individual of the same species
  2. 2. small changes that add up to major changes over a long period of time
  3. 4. similar structures that related species have inherited from a common ancestor
  4. 7. a group of similar organisms that can mate with each other and produce fertile ofspringmate