Evolution

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Across
  1. 3. keeping living conditions by adaptation
  2. 4. organisms that reproduce among each other
  3. 6. actions that species perform to survive
  4. 7. of similar characteristics
  5. 10. the way organisms act to survive
  6. 11. changes suffered by a species
  7. 13. the set of places and conditions to live
  8. 14. brittish botanist
  9. 16. natural skills to survive
  10. 17. the ability to change color to merge
  11. 18. the action of choosing
Down
  1. 1. change between similar species
  2. 2. proof
  3. 5. an idea with proven evidence
  4. 8. the beginning of something
  5. 9. related to biology
  6. 12. the ability to act like another organism
  7. 15. from the nature
  8. 16. an early relative
  9. 18. the organization of a body