SCIENTISTS PUZZLE!

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Across
  1. 3. studies everything!
  2. 6. studies outer space
  3. 8. studies the human brain
Down
  1. 1. studies the molecular structure of things
  2. 2. studies rocks and minerals
  3. 4. studies life on our planet
  4. 5. studies fossils and anent life
  5. 7. studies physics