Question

How does the soil replenished its lost nutrient?

Answer 1

The decaying plants tend to slowly break down into the basic soil nutrients over a period of time.Nutrients are replenished by certain different microorganism that are found in the soil or also by the death of certain plants such as the rhizobium bacteria.

Answer 2

The lost nutrients of soil gets relepnished by the decomposers which usually decompose the dead and decaying palnts and animals which is turned into humus and thus the nutrients gets relepnished.... 

hope this answer will help you.