1. histoire   zoology   history   trigonometry   algebra   Hint Half-n-half Clue   2. physique   geography   physics   geology   chemistry   Half-n-half Clue   3. zoologie   zoology   geography   geometry   botany   Half-n-half Clue   4. géologie   geometry   calculus   geology   psychology   Half-n-half Clue   5. philosophie   geography   calculus   philosophy   geology   Half-n-half Clue   6. trigonométrie   algebra   calculus   trigonometry   geology   Half-n-half Clue   7. calcu   geology   geography   calculus   geometry   Half-n-half Clue