Before 2000 years back rotten plant Humic acids are extremely important for transporting nutrients from the soli to the plant because they can hold onto ionized nutrients, preventing them from leaching away. Humic acids are also attracted to the depletion zone of the plant root. When they arrive at the roots, they bring water and nutrients based upon the plant needs. Fossils in the solil are considered as Leodernite mineral salt. From this mineral salt, the extracted noble thing is Humic acid. It is 100% water soluble.