1. ornitología   cosmetology   ornithology   aeronautics   economics   Hint Half-n-half Clue   2. arqueología   archeology, archaeology   rheology   ornithology   aeronautics   Half-n-half Clue   3. caligrafía   calligraphy   economics   entomology   accountancy   Half-n-half Clue   4. sociología   calligraphy   rheology   telegraphy   sociology   Half-n-half Clue   5. cosmetología   rheology   telepathy   anthropology   cosmetology   Half-n-half Clue   6. contabilidad   sociology   telepathy   accountancy   archeology, archaeology   Half-n-half Clue   7. topología   calligraphy   choreography   topology   astrology   Half-n-half Clue