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