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