1. astronomia   astronomy   botany   zoology   biology   Hint Half-n-half Clue   2. zoologia   geography   astronomy   psychology   zoology   Half-n-half Clue   3. biologia   biology   geometry   trigonometry   history   Half-n-half Clue   4. botanica   botany   algebra   trigonometry   geometry   Half-n-half Clue   5. geometria   trigonometry   psychology   astronomy   geometry   Half-n-half Clue   6. calcolo   calculus   biology   algebra   philosophy   Half-n-half Clue   7. chimica   botany   chemistry   physics   geography   Half-n-half Clue