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