advantages and disadvantages of cotton
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Answers:I am going to assume that you are working with these fibres as opposed to just wearing them: Cotton - easy washed and fairly soft. Even ply, unlikely to cause allergic reactions Silk - depends on the source. Recycled silk is very popular now but is inconsitent in quality and unevenly spun, though fairly affordable. Raw silk is quite expensive, and is usually mixed with other fibres. Very strong - breathes well. Jute - VERY hard on the hands but quite durable, inexpensive and easy to acquire Wool - very easy to come by; available from a variety of animal sources. The fineness of the wool determines its price. Dyes well. Many people are allergic to it, though. Good luck!
Answers:Yes, it has been very successful. A high percentage of cotton grown in the US is genetically engineered, "Bt Cotton". Bt cotton doesn't have the actual bacterium Bacillus thuriengensis in it. It has the gene for producing the Bt toxin that the bacterium produces, genetically engineered in it (that is, carefully inserted into its DNA). This toxin prevents insects in the larvae stage from successfully digesting food, thus starving the insect. It is harmless to humans because our stomach pH is very very low compared to an insect's, and the toxin is destroyed immediately upon entering our stomach. Advantages: Cotton is typically a very very big environmentally burdensome crop to grow, because in order to get decent yields you have to apply pesticides something like 8-10 times or so in a single season. This takes a tractor, which takes fuel, and the farmer's time and money. It poisons the groundwater and is a health hazard to humans and other organisms. Bt cotton successfully repels the boll weevil larvae, one of the principal predators of cotton, and all other larval insects trying to take a bite out of the cotton plant, eliminating the necessity for pesticide applications. Disadvantages: 1. We don't eat cotton or cotton products (cotton seed meal, while high in protein, is toxic); therefore, there are no potential human health disadvantages. 2. Ecologically it may be problematic, as we still don't have a feel for how inserting this Bt gene into the cotton gene pool is going to affect weedy relatives, or the diversity of our cotton crop. 3. Also, it affects all larval insects, so if there are any beneficial caterpillars in the area they will be killed too. Let this be a warning to all cute moths and butterflies! ;) 4. Economic: Finally, there is concern that Monsanto and other companies who own these technologies, will put the cost of these special crop seeds out of the price range of developing countries, who may need this technology even more than anyone else to protect already-polluted groundwater, environment, etc. Agriculture is usually low-tech, and accessible to poor people, but these patented technologies are expensive and exclusive. Monsanto and other SAY they will share, but we know that money is always their bottom line.
Answers:I can't think of any disadvantages but here are the advantages. No other material is quite like cotton. It is the most important of all natural fibres, accounting for half of all the fibres used by the world's textile industry. Cotton has many qualities that make it the best choice for countless uses: Cotton fibres have a natural twist that makes them so suitable for spinning into a very strong yarn. The ability of water to penetrate right to the core of the fibre makes it easy to remove dirt from the cotton garments, and creases are easily removed by ironing. Cotton fabric is soft and comfortable to wear close to skin because of its good moisture absorption qualities. Charges of static electricity do not build up readily on the clothes.