How do biofertilizers enrich the fertility of soil ?

How do fertilizers enrich the fertility of the soil ?

How do biofertilisers enrich the fertility of the soil?

Do you think microbes enrich the fertility of soil ? If yes, how ?

Define biofertilizers.

Describe the role of blue green algae in the fertility of soil.

What are biofertilizers ? Why are biofertilizers preferred to chemical fertilizers ?

How are biofertilizers different from fertilizers such as NPK that we buy in the market ? Justify the role of biofertilizers.

Cyanobacteria are useful biofertilizers in the fields of :