if a resource is not replaced then the resource has low availability & groundwater is a nonrenewable resource ->  if groundwater if not replaced then groundwater will have low availability  ground water is a kind of water & a desert environment is low in availability of water / availability of food ->  a desert environment is low in availability of groundwater  if groundwater if not replaced then groundwater will have low availability & a desert environment is low in availability of groundwater ->  if groundwater is not replaced in an environment then that environment will become a desert  groundwater is a kind of water & groundwater is located under ground / underground ->  groundwater is a kind of water that is located underground  if groundwater is not replaced in an environment then that environment will become a desert & groundwater is a kind of water that is located underground -> if water from underground is not replaced in an environment then that environment will become a desert