Which aquatic ecosystem has very little primary productivity

1.	Which aquatic ecosystem has very little primary productivity
Answer» Answer: River ecosystem Explanation: Primary productivity within the river and streams, is restricted to BENTHIC habitats involving algae and cyanobacteria. RIVERS DRAINING undisturbed are low in nutrients and consequently AQUATIC primary production is low. So, the correct answer is "rivers".

Answer»

Answer: River ecosystem

Explanation:

Primary productivity within the river and streams, is restricted to BENTHIC habitats involving algae and cyanobacteria. RIVERS DRAINING undisturbed are low in nutrients and consequently AQUATIC primary production is low.

So, the correct answer is "rivers".

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Which aquatic ecosystem has very little primary productivity​

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Which aquatic ecosystem has very little primary productivity