1. géométrie   psychology   geometry   physics   philosophy   Hint Half-n-half Clue   2. zoologie   philosophy   zoology   botany   psychology   Half-n-half Clue   3. géographie   biology   calculus   geography   geometry   Half-n-half Clue   4. histoire   botany   chemistry   history   biology   Half-n-half Clue   5. physique   physics   philosophy   history   zoology   Half-n-half Clue   6. psychologie   chemistry   trigonometry   psychology   calculus   Half-n-half Clue   7. biologie   psychology   trigonometry   geometry   biology   Half-n-half Clue