How do fertilizers enrich the fertility of the soil ?

How do biofertilizers enrich the fertility of soil ?

How do biofertilisers enrich the fertility of the soil?

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

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

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

Biofertilisers are organisms that enrich the nutrient quality of the soil. Which one is not a source of biofertilisers?

What is the result of decrease in rainfull and fertility of soil?

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