Q: 22 (IAS/2011)

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/ correct?
question_subject: 
Ecology
question_year: 
2011
question_exam: 
IAS
question_sub_subject: 
Ecology
question_topic: 
Ecology
stats: 
0,8112,5904,2208,7352,3808,648