1. Geschichte   psychology   biology   history   zoology   Hint Half-n-half Clue   2. Infinitesmalrechnung   calculus   geography   zoology   philosophy   Half-n-half Clue   3. Geometrie   astronomy   calculus   history   geometry   Half-n-half Clue   4. Biologie   trigonometry   chemistry   geography   biology   Half-n-half Clue   5. Geologie   zoology   history   geology   botany   Half-n-half Clue   6. Philosophie   algebra   philosophy   zoology   geology   Half-n-half Clue   7. Physik   physics   trigonometry   botany   geometry   Half-n-half Clue