1. storia   philosophy   trigonometry   chemistry   history   Hint Half-n-half Clue   2. astronomia   zoology   physics   geometry   astronomy   Half-n-half Clue   3. botanica   geometry   zoology   botany   trigonometry   Half-n-half Clue   4. trigonometria   zoology   trigonometry   botany   chemistry   Half-n-half Clue   5. psicologia   psychology   geometry   physics   botany   Half-n-half Clue   6. algebra   astronomy   algebra   biology   philosophy   Half-n-half Clue   7. chimica   biology   chemistry   philosophy   calculus   Half-n-half Clue