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1)Selective breeding involves choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics. Humans have selectively bred plants and animals for thousands of years including: crop plants with better yields
2).There are two types of fibres – One is natural fibres which are obtained from natural sources e.g. Cotton, silk, wool and other is synthetic fibres which are man-made for example – rayon, nylon, acrylic etc.
3).Shearing: The tleece of the sheep along with a thin layer of skin is removed from its body.
Scouring: The sheared skin with hair is thoroughly washed in tanks to remove grease, dust and dirt.
Sorting: The hairy skin is sent to a factory where hair of different textures are separated or sorted.
The small fluffy fibres, called burrs, are picked out from the hair
The fibres can be dyed in various colours, as the natural fleece of sheep and goats is black, brown or white.
The fibres are straightened, combed and rolled into yarn.
4).Lamas. The Lama genus of animals, all of whom originate in South America, includes llamas, alpacas, vicunas and guanacos. ...
Camels. ...
Rabbits. ...
Musk Oxen.
5).Occupational Hazards In Wool Industry
Workers in the industry get infected by a bacterium, anthrax, which causes a fatal blood disease called 'sorters disease'.
6).The hairy skin called fleece have wool in black sheep.
7).Cotton clothes are thin and do not have space in which air can be trapped. Thus, cotton clothes do not prevent heat coming out of our body. Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres
8).Mohair, animal-hair fibre obtained from the Angora goat and a significant so-called specialty hair fibre.