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Practice Reading: Fill in The Blanks (Drag & Drop)
ID: #35231
July Prediction
Shrimp Farms
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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.
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