because they are biologically productive estuaries provide ideal ares for migratory. birds to rest and refuel during their long journeys.becuase many species of fish and wildlife rely on the sheltered waters of estuaries as protected. spawning of places estuaries are often called" the nurseries of the sea.
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because they are biologically productive estuaries provide ideal ares for migratory. birds to rest and refuel during their long journeys.becuase many species of fish and wildlife rely on the sheltered waters of estuaries as protected. spawning of places estuaries are often called" the nurseries of the sea.