Environment crossword

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Across
  1. 3. a peice of open world
  2. 6. animals and plants that are at risk of of their species going
  3. 7. a person that studies on a perticular thing in the world
  4. 8. there is 7 of them in the world
  5. 10. another way of saying animal
Down
  1. 1. another word for plants
  2. 2. the opposite of dangerous
  3. 4. where plants,animals and people live
  4. 5. changes everyday and is usually random
  5. 7. communicating to each other
  6. 9. natural growing things