1. storia   history   astronomy   algebra   philosophy   Hint Half-n-half Clue   2. filosofia   astronomy   philosophy   biology   history   Half-n-half Clue   3. geografia   astronomy   physics   botany   geography   Half-n-half Clue   4. zoologia   physics   zoology   geology   calculus   Half-n-half Clue   5. fisica   algebra   geology   physics   biology   Half-n-half Clue   6. psicologia   astronomy   geography   psychology   calculus   Half-n-half Clue   7. algebra   geometry   algebra   zoology   calculus   Half-n-half Clue