A long thread of a material made up of multiple fibres interlocked together is called a ___ .
____ is a long thread made out of a bunch of fibres.
Fill in the following blanks with suitable words :
(a) Synthetic fibres are also called .......... or ....... fibres.
(b) Synthetic fibres are made from raw materials called .......
(c) Like synthetic fibres, plastic is also a ........
(d) The use of plastics can be reduced by using bags made of ........ or ......... instead of polythene bags.