1. astronomia   astronomy   chemistry   algebra   biology   Hint Half-n-half Clue   2. zoologia   zoology   chemistry   botany   psychology   Half-n-half Clue   3. psicologia   chemistry   geology   psychology   botany   Half-n-half Clue   4. biologia   psychology   biology   botany   geometry   Half-n-half Clue   5. história   geometry   physics   psychology   history   Half-n-half Clue   6. botânica   trigonometry   zoology   botany   geometry   Half-n-half Clue   7. geometria   geography   geometry   trigonometry   geology   Half-n-half Clue