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Practice Reading: Fill in The Blanks (Drag & Drop) ID: #35231 July Prediction Shrimp Farms
Instructions
* Drag the correct answer into all target fields
Over  the  past  two  decades  around  a  third  of  the  world's  mangrove  swamps  have  been    for  human  use,  with  many  turned  into  valuable  shrimp  farms.  In  2007  an  economic  study  of  such  shrimp  farms  in  Thailand  showed  that  the  commercial  profits  per  hectare  were  $9,632.  If  that  were  the  only  factor,  conversion  would  seem  an  excellent  idea.  However,  proper    shows  that  for  each  hectare  government  subsidies  formed  $8,412  of  this  figure  and  there  were  costs,  too:  $1,000  for  pollution  and  $12,392  for  losses  to  ecosystem  services.  These  comprised  damage  to  the    of  foods  and  medicines  that  people  had  taken  from  the  forest,  the  loss  of  habitats  for  fish,  and  less  buffering  against  storms.  And  because  a  given  shrimp  farm  only  stays    for  three  or  four  years,  there  was  the  additional  cost  of  restoring  them  afterwards.

converted accounting productive estimated productivity regenerating supply

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