B11

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Across
  1. 3. Structure made of tissues
  2. 4. Increase in size or number of cells
  3. 6. Change in populations over time
  4. 8. Condition that distinguishes living things from nonliving matter
  5. 9. Group of organs working together
  6. 10. Basic unit of life
  7. 11. Group of similar cells performing a function
  8. 12. Sum of all chemical reactions in an organism
  9. 15. Production of offspring
  10. 16. Study of living organisms
Down
  1. 1. Maintenance of internal stability
  2. 2. Trait improving survival
  3. 5. Changes occurring during an organism's life
  4. 7. Environmental change causing a response
  5. 13. Individual living thing
  6. 14. Reaction to a stimulus