In arid regions, the potential resources of fresh and/or good-quality water are limited because of the scantness of rainfall and the very high potential evaporation, exceeding the potential rainfall by ten times or more.
(the potential resources of fresh and/or good-quality water; are limited; because of the scantness of rainfall and the very high potential evaporation; L:In arid regions)
the potential resources of fresh and/or good-quality water
are limited
because of the scantness of rainfall and the very high potential evaporation L:In arid regions