1. história   zoology   geometry   history   algebra   Hint Half-n-half Clue   2. botânica   psychology   physics   botany   history   Half-n-half Clue   3. cálculo   biology   geology   physics   calculus   Half-n-half Clue   4. química   zoology   philosophy   calculus   chemistry   Half-n-half Clue   5. geografia   geometry   psychology   astronomy   geography   Half-n-half Clue   6. astronomia   biology   geography   astronomy   physics   Half-n-half Clue   7. psicologia   psychology   zoology   trigonometry   philosophy   Half-n-half Clue