Maintenance of soil fertility without addition of nutrition is due to

Maintenance of soil fertility without addition of nutrition is due to

غذائیت کے اضافے کے بغیر مٹی کی زرخیزی کس کو برقرار رکھنے کی وجہ سے ہے۔
Explanation

Soil fertility is the ability of a soil to sustain agricultural plant growth.

It is maintained without addition of nutrition due to microbial activity.

Microbes increase the amount of nutrients in soil available for plants.