1. Zoologie   history   geometry   zoology   calculus   Hint Half-n-half Clue   2. Trigonometrie   astronomy   trigonometry   geography   biology   Half-n-half Clue   3. Algebra   algebra   geology   zoology   astronomy   Half-n-half Clue   4. Infinitesmalrechnung   geology   physics   botany   calculus   Half-n-half Clue   5. Geologie   geology   history   algebra   biology   Half-n-half Clue   6. Chemie   history   chemistry   trigonometry   zoology   Half-n-half Clue   7. Physik   calculus   zoology   physics   botany   Half-n-half Clue