Question

if soil has all the nutrients why do we need to replenish it

Answer 1

Soil has all the nutrients required for the growing of plants but it needs to be replenished because the nutrients present are used up by the plants for providing nutrition to itself for survival.

Hope this helps you!

Answer 2

After a long time plant use the
neutrients to form there food
,for genral uses and then the
netrients present in soil os exausted
so we need to replenish it for the
betterment of plant by various method.