1. astronomia   philosophy   astronomy   trigonometry   geology   Hint Half-n-half Clue   2. trigonometria   botany   zoology   trigonometry   calculus   Half-n-half Clue   3. biologia   physics   chemistry   biology   geology   Half-n-half Clue   4. filosofia   geology   chemistry   philosophy   geometry   Half-n-half Clue   5. calcolo   calculus   zoology   physics   geography   Half-n-half Clue   6. fisica   astronomy   physics   botany   chemistry   Half-n-half Clue   7. chimica   zoology   botany   chemistry   history   Half-n-half Clue