crossword puzzle

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Across
  1. 8. discovered radioactivity 1867-1934
  2. 9. pioneer in the field of exobiology
  3. 10. of quantum theory
  4. 11. known for theory of relativity
  5. 13. molecular bioligist
Down
  1. 1. father of quantum physics
  2. 2. discovered penicillin
  3. 3. father of biodiversity
  4. 4. designed regent street
  5. 5. developed the theory of evolution
  6. 6. father og dna
  7. 7. invented pascal
  8. 12. famous for laws of motion