I don't think anyone's found a definitive answer yet, but the more studies are done, the more we find is because of nature, not nurture. There is no doubt that BOTH are important.
Well I would think that the average amount of days in a month would be 30.
So 30(18)=540
D. Arabian Sea and Gulf of Aden. :)
The answer is B. That is the definition of a filibuster. <span />
I believe it was Frederick Douglass.