Michael Percy wrote in message
...
Jim Webster wrote:

by your definition of arid damn all will grow anyway

The definition I suggested was land with less than 10 inches
avg. annual rainfall.

and have been told that ten inches isn't arid, see Oz's post.
Also rainfall doesn't define fertility, available water determines
rainfall, the fertile cresent has a pretty low rainfall, as has the Nile
valley.


--
Jim Webster

"The pasture of stupidity is unwholesome to mankind"

'Abd-ar-Rahman b. Muhammad b. Khaldun al-Hadrami'