It has been caused by large quantities of nutrients discharged by agriculture into the river and then carried into the coastal region. In the sea, nutrients lead to rampant algal growth. When the algae die, they sink into the deeper water layers and are broken down by bacteria in a process which consumes oxygen
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Answer:
It has been caused by large quantities of nutrients discharged by agriculture into the river and then carried into the coastal region. In the sea, nutrients lead to rampant algal growth. When the algae die, they sink into the deeper water layers and are broken down by bacteria in a process which consumes oxygen