Use of synthetic fibres increased manifold during World War II.Comment.
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Answer:
Urea is the main nitrogenous waste in the human blood, through filtration is it removed from the blood. Explanation: Urea is the major nitrogenous waste in the humans. It's removed from the body via filtration in the kidneys, transport to temporary storage in the urinary bladder, and removal by urination.
Answer:
Synthetic fiber or synthetic fibre (in British English; see spelling differences) are fibers made by humans through chemical synthesis, as opposed to natural fibers that are directly derived from living organisms. They are the result of extensive research by scientists to improve upon naturally occurring animal and plant fibers. In general, synthetic fibers are created by extruding fiber-forming materials through spinnerets, forming a 'different' fiber. These are called synthetic or artificial fibers. Synthetic fibers are created by a process known as polymerization, which involves combining monomers to make a long chain or polymer. The word polymer comes from a Greek prefix "poly" which means "many" and suffix "mer" which means "single units". (Note: each single unit of a polymer is called a monomer). There are two types of polymerization: linear polymerization and cross-linked polymerization.
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