WEEK 4 words

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Across
  1. 4. person who studies biology
  2. 6. how words are used properly
  3. 7. study of myths
Down
  1. 1. a signature by a specific person
  2. 2. study of minerals
  3. 3. controlled by itself
  4. 4. a specific region of life on earth
  5. 5. a set of code for a machine