Question

In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the

 1. decomposer microorganisms to the surface. 

2. nutrients to the surface. 

3. bottom-dwelling organisms to the surface. 

Which of the statements given above is/are correct? 

(a) 1 and 2 (b) 2 only (c) 2 and 3 (d) 3 only

Answer 1

(c) Upwelling brings nutrient-rich water towards the ocean surface, replacing the warmer, usually nutrient-depleted surface water. This is to do with the phytoplankton’s and nothing to do with the decomposer microorganisms.