Bill Nye Crossword

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Across
  1. 4. 71% of the earth is covered in this
  2. 6. Group of animals
  3. 7. A chemical that helps plants grow
  4. 11. Different species that live across the world
  5. 12. A muddy and swampy area
Down
  1. 1. Something that has not been changed
  2. 2. Lizards Turtles, Snakes and crocodiles are in this group
  3. 3. A dry and sandy ecosystem
  4. 5. Needs lots of different types of plants and animals
  5. 8. An animal that doesn't exist anymore
  6. 9. Living and non living things in an ecosystem
  7. 10. Something that lives on a farm