9 Laws of Nature

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Across
  1. 2. Likes to chase mice
  2. 4. excesses from within
  3. 6. on diversity
  4. 8. on Sunlight
  5. 12. local expertise
  6. 13. Has a trunk
Down
  1. 1. everything
  2. 3. the power of limits
  3. 5. Flying mammal
  4. 7. Large marsupial
  5. 9. cooperation
  6. 10. only the energy it needs
  7. 11. form to function
  8. 12. Man's best friend