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:
Starch and Cellulose belong to the same group of carbohydrates. Carbohydrates are one of the common forms of energy sources in food. They have the molecular formula CH2O. They are macromolecules made up of several monomer units of glucose.lthough starch and cellulose are both polymeric forms of glucose, they differ in the properties. These differences tend to be the result of the difference of a single chemical bond between the monomeric units. The varied nature makes the carbohydrates to play both energy providing function as well as structural roles.