Australian Inventions Vocabulary

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Across
  1. 3. noun form of the adjective strong
  2. 6. to develop slowly
  3. 7. very very old
  4. 8. a way of doing something
Down
  1. 1. a range of different things
  2. 2. the beginning
  3. 4. a scientific process to test a theory
  4. 5. having a level surface