1. fisica   astronomy   physics   biology   calculus   Hint Half-n-half Clue   2. filosofia   calculus   psychology   astronomy   philosophy   Half-n-half Clue   3. psicologia   psychology   trigonometry   botany   calculus   Half-n-half Clue   4. geometria   trigonometry   geometry   algebra   biology   Half-n-half Clue   5. chimica   geology   chemistry   astronomy   psychology   Half-n-half Clue   6. storia   geology   biology   history   astronomy   Half-n-half Clue   7. trigonometria   biology   chemistry   calculus   trigonometry   Half-n-half Clue