1. topologia   radiology   economics   entomology   topology   Hint Half-n-half Clue   2. etiologia   economics   etiology, aetiology   topology   telepathy   Half-n-half Clue   3. contabilidade   accountancy   economics   calligraphy   aeronautics   Half-n-half Clue   4. telegrafia   cosmetology   anthropology   telegraphy   etiology, aetiology   Half-n-half Clue   5. telepatia   ornithology   telepathy   anthropology   seismology   Half-n-half Clue   6. arqueologia   telegraphy   astrology   topology   archeology, archaeology   Half-n-half Clue   7. economia   economics   aeronautics   sociology   calligraphy   Half-n-half Clue