Well, if you don't bring any water you could get dehydrated and sometimes die.
Some plateaus are deserts, some are not.
No, but some deserts do.
Vietnam has no deserts.
There are no deserts in Virginia.
Portugal has no deserts.
Hawaii has no deserts.
no deserts
Japan has no deserts.
Singapore has no deserts.
There are no deserts in Ohio.
There are no deserts in Cuba.
There are no German deserts