1. trigonometria   zoology   astronomy   trigonometry   chemistry   Hint Half-n-half Clue   2. fisica   trigonometry   biology   physics   philosophy   Half-n-half Clue   3. filosofia   geology   philosophy   biology   physics   Half-n-half Clue   4. geografia   algebra   geography   chemistry   geology   Half-n-half Clue   5. botanica   calculus   history   botany   chemistry   Half-n-half Clue   6. geometria   geometry   chemistry   geology   botany   Half-n-half Clue   7. storia   calculus   algebra   geology   history   Half-n-half Clue