1. trigonometria   trigonometry   psychology   history   biology   Hint Half-n-half Clue   2. psicologia   psychology   physics   chemistry   astronomy   Half-n-half Clue   3. zoologia   history   physics   zoology   algebra   Half-n-half Clue   4. álgebra   geometry   algebra   chemistry   geography   Half-n-half Clue   5. história   philosophy   biology   physics   history   Half-n-half Clue   6. biologia   biology   chemistry   psychology   history   Half-n-half Clue   7. geologia   geology   history   trigonometry   geography   Half-n-half Clue