Review

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Across
  1. 7. action or process of making a copy of something
  2. 11. individual animal
  3. 12. tiny cellular structure
  4. 13. cellular organizational level between cells and a complete organ
  5. 14. passed from one generation to another
  6. 15. basic building blocks of living things
  7. 16. perform specific functions
  8. 19. respond of something
  9. 20. surroundings or conditions in which a living thing lives or operates
Down
  1. 1. grow and develop following specific instructions
  2. 2. group of living things
  3. 3. process that modulates
  4. 4. m is a group of organs that work together
  5. 5. internal environments
  6. 6. inhabitants of an area
  7. 8. biological community of interacting organisms
  8. 9. regions of the surface, atmosphere occupied by living organisms
  9. 10. chemical processes that occur within a living organism in order to maintain life
  10. 17. species becomes fitted to its environment
  11. 18. source used for metabolic activities