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

Why are biofertilizers or biopesticides prefered to chemical fertilizers or pesticides?

Why are biofertilizers or biopesticides preferred over chemical fertilizers?

Define biofertilizers.

What are biofertilizers ? Name two sources of biofertilizers.

What are biofertilizers ? Give two examples.

What are the uses of chemical fertilizers ?

What are fertilizers? What are mixed fertilzers? Why do farmers add fertilizer to the soil? How should we store fertilizes?

What are biofertilizers ? What are the main sources of biofertilizers ?