1. psicologia   botany   psychology   philosophy   zoology   Hint Half-n-half Clue   2. trigonometria   trigonometry   geology   botany   psychology   Half-n-half Clue   3. geologia   geology   biology   zoology   astronomy   Half-n-half Clue   4. algebra   geography   chemistry   algebra   astronomy   Half-n-half Clue   5. astronomia   astronomy   geometry   calculus   trigonometry   Half-n-half Clue   6. storia   trigonometry   history   chemistry   geology   Half-n-half Clue   7. filosofia   trigonometry   geology   geometry   philosophy   Half-n-half Clue