Estuaries are highly productive as they are nutrient trap due to mixing of
A
Ocean and pond
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B
Lake and river
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C
Pond and lake
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D
River and Sea water
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Solution
The correct option is B River and Sea water Estuaries are partially enclosed coastal body formed where fresh water meets with salt water from the ocean. One or more rivers or streams flow into they. They are highly productive as they are nutrient trap due to mixing of river and sea water. They occur in Kerala, Tamilnadu and Odisha in India. These basically filter sediment from the water before it flows into the oceans.
Thus, the correct answer is 'River and Sea water.'