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

Why are biofertilizers or biopesticides preferred over chemical fertilizers?

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

What are the uses of chemical fertilizers ?

True or False Organic farming involves the replacement of chemical fertilizers and pesticides by biofertilizers and bio-pesticides.

List any five chemical fertilizers rich in nitrogen.

Why should we discourage the use of chemical fertilizers?

What are the effects of use of fertilizers and pesticides for long period on soil fertility ? What are the causes of soil erosion ?

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

How can microorganisms be used to decrease the use of chemical fertilizers and pests ?