[OS X TeX] How to fit a table into the letter size paper

[Kuo-Hsien Chang]

Dear all,

The table should be fit into the letter size paper, however my code  
did not allow me to do it.

Please help me and have a look on it.

Thanks,
Michael

\begin{tabular}{lllllllllll}
\hline
Soil depth(cm) & Sand(\%) & Silt(\%) & Clay(\%) & BD(gcm-3) &  
FC(cm3cm-3) & K(cms-1) & WP(cm3cm-3) & pH & Root(\%) & OM(\%) 
\tabularnewline
0−2 & & & & & & & & & & \tabularnewline
2−5 & & & & & & & & & & \tabularnewline
5−10 & & & & & & & & & & \tabularnewline
10−20 & & & & & & & & & & \tabularnewline
20−30 & & & & & & & & & & \tabularnewline
30−45 & & & & & & & & & & \tabularnewline
45−60 & & & & & & & & & & \tabularnewline
60−75 & & & & & & & & & & \tabularnewline
75−90 & & & & & & & & & & \tabularnewline
90−105 & & & & & & & & & & \tabularnewline
105−120+ & & & & & & & & & & \tabularnewline
\hline
\end{tabular}