1. psicologia   psychology   botany   chemistry   physics   Hint Half-n-half Clue   2. astronomia   psychology   astronomy   history   geology   Half-n-half Clue   3. geologia   geology   botany   psychology   algebra   Half-n-half Clue   4. fisica   philosophy   geometry   geology   physics   Half-n-half Clue   5. zoologia   zoology   chemistry   trigonometry   physics   Half-n-half Clue   6. geografia   history   geography   psychology   physics   Half-n-half Clue   7. calcolo   calculus   zoology   physics   trigonometry   Half-n-half Clue