1. исчисление   calculus   zoology   algebra   biology   Hint Half-n-half Clue   2. психология   calculus   trigonometry   psychology   history   Half-n-half Clue   3. химия   geometry   chemistry   algebra   biology   Half-n-half Clue   4. география   psychology   geography   philosophy   botany   Half-n-half Clue   5. геология   geology   calculus   algebra   trigonometry   Half-n-half Clue   6. тригонометрия   botany   trigonometry   algebra   physics   Half-n-half Clue   7. философия   calculus   biology   philosophy   astronomy   Half-n-half Clue