Biology

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Across
  1. 4. has a nucleus
  2. 5. tissues that work together to perform a common function
  3. 7. the powerhouse of the cell
  4. 10. do not have a nucleus
  5. 12. traits giving an organism an advantage to survive
  6. 13. building by removing water
  7. 15. speed up chemical reaction by lowering activation energy
Down
  1. 1. a specialized subunit of the cell
  2. 2. a living thing that can maintain all life functions
  3. 3. constant internal conditions
  4. 6. organelle responsible for photosynthesis
  5. 8. breaking chemical bonds by adding water
  6. 9. father of evolution
  7. 11. a group of cells that perform a common function
  8. 14. energy