1. trigonometria   physics   trigonometry   algebra   calculus   Hint Half-n-half Clue   2. zoologia   biology   geometry   zoology   botany   Half-n-half Clue   3. álgebra   chemistry   algebra   psychology   geology   Half-n-half Clue   4. biologia   algebra   biology   zoology   trigonometry   Half-n-half Clue   5. geometria   geometry   geology   zoology   physics   Half-n-half Clue   6. astronomia   psychology   geometry   astronomy   geology   Half-n-half Clue   7. física   history   trigonometry   psychology   physics   Half-n-half Clue