Relative dating to determine the age of rocks and fossils. Geologists have established a set of principles that can be applied to sedimentary and volcanic rocks that are exposed at the Earth's surface to determine the relative ages of geological events preserved in the rock record.
In contrast, fibers from natural sources are provided by nature in ready-made form. Natural fibers include the protein fibers such as wool and silk, the cellulose fibers such as cotton and linen, and the mineral fiber asbestos. Plant fibers can be further on classified as:1  Fibre occurring on the seed (raw cotton, java cotton). 2  Phloem fiber (flax, ramie, hemp, jute).n contrast, fibers from natural sources are provided by nature in ready-made form. Natural fibers include the protein fibers such as wool and silk, the cellulose fibers such as cotton and linen, and the mineral fiber asbestos. Plant fibers can be further on classified as:
This organic compound, which is considered the most abundant on earth, is even excreted by some bacteria. Cellulose provides structure and strength to the cell walls of plants and provides fiber in our diets. Although some animals, such as ruminants, can digest cellulose, humans cannot. Cellulose falls into the category of indigestible carbohydrates known as dietary fiber. In recent years, cellulose has become a popular food additive due to its unique chemical and physical properties when combined with water.