Evolution

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Across
  1. 3. characteristics that could be passed onto offspring
  2. 4. ___________ is the record of the fossils in lower and upper layers
  3. 8. how something becomes better developed and stronger
  4. 10. overproduction of offspring
  5. 11. variations include mutations and genetic recombination
  6. 12. what happens when glucose is broken down to get energy
  7. 14. what happens to species during short periods of rapid change
  8. 15. suggests common ancestry
Down
  1. 1. 3 things that are similar in all living organisms
  2. 2. When individuals with high fitness are better than those with low fitness
  3. 5. present species developed from earlier, distincly different species
  4. 6. A change in the genetic material of a cell
  5. 7. 2 parts to this theory
  6. 9. explains a wide range of observations
  7. 13. when there is a limited supply of resources