Science

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Across
  1. 2. Units of energy
  2. 3. Something that gives live birth and has fur
  3. 5. Something that's died out
  4. 8. An animal that only eats plants
  5. 10. Something with scales
  6. 11. Something that swims
  7. 13. Used to change the colours of acid and alkali
  8. 15. A place where animals and plants live
  9. 17. It has the pH below seven
  10. 18. A natural indicator
  11. 19. Something that makes its own food
Down
  1. 1. It has the pH above seven
  2. 4. Something that flies
  3. 6. Something that eats only meat
  4. 7. It has a pH of seven
  5. 9. Something that has a backbone
  6. 12. Something that is close to dying out
  7. 14. A type of 8b legged animal
  8. 16. Something that feeds off other animals or plants
  9. 20. Something that eats both meat and plants#