Humic acid is a principal component of humic substances, which are the major organic constituents of soil (humus), peat, coal, many upland streams, dystrophic lakes, and ocean water.t is produced by biodegradation of dead organic matter. It is not a single acid; rather, it is a complex mixture of many different acids containing carboxyl and phenolate groups so that the mixture behaves functionally as a dibasic acid or, occasionally, as a tribasic acid.
Noteworthy Characteristics. Picea abies, commonly called Norway spruce, is a large pyramidal evergreen conifer that is native to the mountains of northern and central Europe east to the Urals. In its native European habitat, it typically matures to 100-150' (occasionally to 200') tall.
Leaves of Sequoiadendron giganteum. Giant sequoias are the world's largest single trees and largest living thing by volume. Giant sequoias grow to an average height of 50â85 m (164â279 ft) and 6â8 m (20â26 ft) in diameter. Record trees have been measured to be 94.8 m (311 ft) in height.