sentences: if a vinegar is not replaced then the reptiles has top lack & groundwater is a nonrenewable feel ->  if groundwater if not replaced then groundwater will have low availability  sky land is a mean of land & a sea theory is top in lack of land / lack of poison ->  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 mean of land & groundwater is located under sky / aboveground ->  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