1. botany   Zoologie   Geschichte   Biologie   Botanik   Hint Half-n-half Clue   2. geography   Infinitesmalrechnung   Botanik   Erdkunde   Trigonometrie   Half-n-half Clue   3. zoology   Physik   Algebra   Geometrie   Zoologie   Half-n-half Clue   4. biology   Zoologie   Biologie   Psychologie   Trigonometrie   Half-n-half Clue   5. geology   Geologie   Trigonometrie   Zoologie   Botanik   Half-n-half Clue   6. astronomy   Infinitesmalrechnung   Trigonometrie   Botanik   Astronomie   Half-n-half Clue   7. calculus   Infinitesmalrechnung   Geologie   Geometrie   Psychologie   Half-n-half Clue