b) What are the two sources of synthetic fibres?
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Most of the synthetic fibres are obtained from coal, petroleum and natural gas. Nylon and rayon are two examples of synthetic fibres.
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2
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Synthetic fibres are manufactured using plant materials and minerals: viscose comes from pine trees or petrochemicals, while come from oil and coal. Viscose fibre is obtained from the cellulose; versatility allows imitating materials such as cotton or silk.
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