Organic components of the soil include all the following except

The organic components of soil are those derived from living organisms, including plants, animals, and micro-organisms. These components contribute to the formation of humus, which is a dark, spongy material that enriches soil fertility. Animal remains, such as bones and shells, can also contribute to the organic matter in soil as they decompose. Similarly, micro-organisms such as bacteria and fungi play a crucial role in breaking down organic matter into nutrients that can be used by plants. Rock pedestals, on the other hand, are not organic components of soil. They are geological features that are formed by the erosion of soft rock layers, leaving harder rock layers standing as pillars or pedestals. Therefore, the answer is "rock pedestals".