1. fisica   physics   botany   geology   psychology   Hint Half-n-half Clue   2. chimica   biology   trigonometry   history   chemistry   Half-n-half Clue   3. geografia   history   astronomy   calculus   geography   Half-n-half Clue   4. storia   trigonometry   calculus   botany   history   Half-n-half Clue   5. psicologia   calculus   psychology   geography   botany   Half-n-half Clue   6. astronomia   geography   botany   astronomy   philosophy   Half-n-half Clue   7. algebra   geology   algebra   biology   philosophy   Half-n-half Clue