1. química   biology   botany   geography   chemistry   Hint Half-n-half Clue   2. álgebra   trigonometry   algebra   calculus   geometry   Half-n-half Clue   3. geometria   chemistry   psychology   botany   geometry   Half-n-half Clue   4. história   botany   biology   zoology   history   Half-n-half Clue   5. geologia   biology   geography   geology   algebra   Half-n-half Clue   6. trigonometria   trigonometry   biology   philosophy   chemistry   Half-n-half Clue   7. geografia   botany   history   geography   algebra   Half-n-half Clue