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In the context of ecosystem productivity marine upwelling zones are important as they increase the marine productivity by bringing the1. decomposer micro-organisms to the surface.2. nutrient to the surface.3. bottom dwelling organisms to the surface. Which of the statements given below are correct?

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In the context of ecosystem productivity marine upwelling zones are important as they increase the marine productivity by bringing the<br />1. decomposer micro-organisms to the surface.<br />2. nutrient to the surface.<br />3. bottom dwelling organisms to the surface. Which of the statements given below are correct?






 
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