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Azolla is used as a biofertilizer because it

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in Microbes in Human Welfare by (58.8k points)

Azolla is used as a biofertilizer because it

(a) multiplies very fast to produce massive bio

(b) has association of nitrogen fixing Rhizobium

(c) has association of nitrogen fixing cyanobacteria 

(d) has association of Mycorrhiza

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1 Answer

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by (49.0k points)

(c) has association of nitrogen fixing cyanobacteria

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