I assume you mean the Inheritance Cycle by Christopher Paolini. The fourth book, Inheritance, will be released on November 8, 2011. Hope that helped!
No
They are going back and forth with Microsoft to realise the Updates free or not. So far, the answer is NO.
Water cycle is not going to end. It is an on-going process.
yes
Yes
cycle of disease transmission
Unfortunately, I have been hearing no, that she is going to write a spin off book series instead. Though, I do wish she were going to write a forth book.
because the word cycle. which means continuous process
yes
it keeps the cycle going
from the lunar cycle like going mad on a full moon from the lunar cycle like going mad on a full moon from the lunar cycle like going mad on a full moon
There is not going to be a forth book in the airhead series it was the Airhead triology.