information about woolen
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:Wool, animal fibre forming the protective covering, or fleece, of sheep or of other hairy mammals, such as goats and camels. Prehistoric man, clothing himself with sheepskins, eventually learned to make yarn and fabric from their fibre covering. Selective sheep breeding eliminated most of the long, coarse hairs forming a protective outer coat, leaving the insulating fleecy undercoat of soft, fine fibre.
Wool fibre is chiefly composed of the animal protein keratin. Protein substances are more vulnerable to chemical damage and unfavourable environmental conditions than the cellulose material forming the plant fibres. Coarser than such textile fibres as cotton, linen, silk, and rayon, wool has diameters ranging from about 16 to 40 microns (a micron is about 0.00004 inch). Length is greatest for the coarsest fibres. Fine wools are about 1.5 to 3 inches (4 to 7.5 centimetres) long.
Explanation:
wool is very use full for our dress