my spelling words

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Across
  1. 3. a sample of human skin
  2. 5. don't say a word
  3. 6. you use your memory
  4. 9. it sucks up dirty things
  5. 12. when you see something you like
  6. 13. a community of plants and animals
  7. 14. when you think someone is write
  8. 15. when you can't be any more happy
  9. 16. you sing in an assembly
Down
  1. 1. a type of science
  2. 2. when you turn into something
  3. 4. exactly the same on both sides
  4. 7. santa comes down it
  5. 8. it is where you will find art
  6. 10. your parents sister
  7. 11. add together bio and chemistry
  8. 13. a story of a person
  9. 17. add together mean and while