Not a letter :p
No, it's a word!
a. the way in which we have communicated our discoveries throughout the history of humanity...<br />
b. an alien language... <br />
c. that which determines musical rhythm...<br />
d. that which tells us how many of something there is...
It's like an 'expiration date' indicator. <br />
The 2010 world average life expectancy at birth is 67.2 years. <br />
But in the United States:<br />
African Americans live 73.6 years.<br />
Euro-Americans live 78.2 years.<br />
Latino-Americans live 80.6 years.<br />
Asian-Americans live 87 years.
its a part of life not many people understand
I don't know...but I know 1 is the loneliest number