👉 In biology, a hydric acid is a type of organic acid that dissolves in water. Hydric acids are found in soil and other natural sources where they can break down organic matter into simpler compounds such as hydrogen and oxygen. Examples include urea (NH4HCO3), which is the major component of grass roots, and ammonium nitrate (NH4NO3) which makes up many fertilizers used to enrich soils. In this context, a hydric acid