All answers begin with 'A'. I'll give you the definitions of two shorter words. You just need to add them together to make one longer word.
Ex: In a higher place + Flat slab of wood = aboveboard.
-1. To be in agreement + Social insect. 9 letters
2. The sky + Art or skill. 8 a------t
-3. First Greek letter + A wager. 8
-4. 4,047 square metres + Years lived. 7
-5. Water + Facial twitch. 7
-6. Upper limb + A Seat. 8
-7. Fire residue + A salver. 7
-8. In or near the location of + A robbery. 7
-9. Subsequent to + Try the flavour. 10
-10. A car + A diagram of data. 9 a---g----