Darwins presentation crossword

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Across
  1. 1. principle stating that all organisms living/extinct originate from common ancestors
  2. 3. members of each species compete for recources
  3. 6. inherited charcteristics that increase an organism's survival chance
  4. 7. structure having different mature forms but,same embryonic tissue
  5. 8. Darwins evidence of evolution
  6. 10. this results in changes of inherited characteristics of a population increasing fitness over time
  7. 11. nature provides variation, while humans select usefull variations
Down
  1. 2. organisms produced by natural selection having different structures,niches or inhabiting other habitats
  2. 4. what did Darwin call the ability of an individual to survive and reproduce
  3. 5. individuals that are suited to their enviroment with the ability to survive/reproduce successfully
  4. 9. organs reduced to the point in which they're just traces of homologous organs