Question

Brackish water aquaculture, is practised in coastal areas where a mix of seawater and freshwater is available, rather than purely in freshwater ponds, mainly because:

A Brackish water has no dissolved oxygen
B Brackish water is always cheaper to access than freshwater
C Certain commercially important species such as tiger shrimp naturally thrive in the intermediate salinity range found in brackish water
D Brackish water eliminates the need for any feed
E Freshwater ponds cannot be constructed near the coast
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