Arid zone:arid area are extremely dry receiving minimal precipitation. Anual rai
Arid zone:arid area are extremely dry receiving minimal precipitation. Anual rain fall is very low often less then 250 milliliters Semi arid zone:semi arid area receiving more rainfall then arid area bul still have insufficient water to support abundant vegetation annual precipitation in semi arid area reigns range is 250 to 500 milliliters.
