Environmental factors

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Across
  1. 2. "but these girls aren't cheap _______ they're people!"
  2. 3. Most abundant element in the universe
  3. 4. amount of hearts an octopus has
  4. 5. flightless bird in antarctica
  5. 7. household is unable to heat/cool their home
  6. 9. hottest planet in our solar system
  7. 11. used to be a planet
  8. 12. another animal to have a 'best friend'
  9. 15. caused by irritants such as dust/pollen
  10. 16. "Oh full of __________ is my mind!"
  11. 17. 'unsinkable ship'
  12. 18. only organism to produce milk and eggs
  13. 19. largest human organ
Down
  1. 1. Any disease involving the heart or blood vessels.
  2. 6. Pathological conditions affecting organisms ability to breathe
  3. 8. Household has too many people
  4. 10. substance that contaminates something
  5. 13. Name of my dog
  6. 14. tallest mountain in world
  7. 18. Lily's favourite colour