While the use of iron started to become more widespread around 1200 BC, mainly because of interruptions in the trade routes for tin, the metal is much softer than bronze.

While some people with bipolar disorder mainly experience manic symptoms, others more often feel depressed.

While in Fort Worth, Wills added the " rowdy city blues " of Bessie Smith and Emmett Miller to a repertoire of mainly waltzes and breakdowns he had learned from his father, and patterned his vocal style after that of Miller and other performers such as Al Bernard.

While the addition to the electron-rich alkenes and alkynes is mainly electrophilic, the nucleophilic addition plays an important role for the carbon-heteroatom multiple bonds, and especially its most important representative, the carbonyl group.

While an emphasis remains on agriculture and stock breeding, due to the climate and terrain of the island, there has been a drop in manufacturing, and an observable expansion in its service industries ( mainly tourism-related ).

While it has skin and blood ( cellular organic systems ), these serve mainly as a disguise and are not symbiotic with the machine components, a trait of true cyborgs.

While relations between the islands have had difficulties, mainly due the huge exodus of illegal immigrants from the Dominican Republic due to the nation's history of economic woes, the islands still, with the assistance of the United States Coast Guard and the Dominican Navy have worked hard to reduce the number of Dominicans crossing the Mona Passage in recent years.

While Charles Darwin is mainly noted for his treatise on evolution, he was one of the founders of soil ecology, and he made note of the first ecological experiment in The Origin of Species.

While he was billed as a supporting actor in the 1978 Battlestar Galactica pilot, a majority of his scenes were cut mainly because those scenes dealt with Serina's ( Jane Seymour ) " space cancer " B-story which had been excised from the final cut.

While glycerophospholipids are the major component of biological membranes, other non-glyceride lipid components such as sphingomyelin and sterols ( mainly cholesterol in animal cell membranes ) are also found in biological membranes.

While the CIA Factbook in 2006 stated that the " US is the only industrialized nation that does not mainly use the metric system ", ( in addition to non-industrialised Burma / Myanmar, Liberia ), the actual situation, however, is more complicated than the CIA Factbook would suggest-in the United Kingdom, for example, although metric is the official system for most regulated trading by weight or measure purposes, the pint is the official unit for milk in returnable bottles and for draught beer and cider in British pubs, and miles, yards and feet remain the official units for road signage.

While the mobility of walking vehicles is arguably higher than that of wheeled or tracked vehicles, their inherent complexity has limited their use mainly to experimental vehicles.

While some stations play all kinds of electronic dance music, others ( mainly pirate radio stations ) focus on particular genres.

While quarterbacks are mainly not a factor in terms of receiving forward passes, some trick plays, like the flea flicker, require quarterbacks to catch a lateral by a wide receiver or running back before delivering a forward pass.

While large farms concentrate mainly on the production of grain and husbandry products, small private household plots produce most of the country's yield of potatoes, vegetables and fruits.

While sociobiology is predicated on the observation that genes do affect behavior, it is perfectly consistent to be a sociobiologist while arguing that measured IQ variations between individuals reflect mainly cultural or economic rather than genetic factors.

While international trade has been present throughout much of history ( see Silk Road, Amber Road ), its economic, social, and political importance have increased in recent centuries, mainly because of Industrialization, advanced transportation, globalization, multinational corporations, and outsourcing.

While famous in his day as an opera composer, he is mainly remembered today for his instrumental music, such as the concertos, some of which are regularly recorded.

While the majority of the missile launches came from United States Department of Defense footage of ICBM missile tests ( mainly Minuteman IIIs from Vandenberg Air Force Base adjacent to Lompoc, California ), all of the stock footage of missile launches were acquired from declassified DoD film libraries.

While this book contains some history of the Nephites, including the death of Nephi, it is mainly a record of Jacob's preachings to his people.

While PEDOT ( poly ( 3, 4-ethylenedioxythiophene )) is mainly used in antistatic applications and as a transparent conductive layer in form of PEDOT: PSS dispersions ( PSS = polystyrene sulfonic acid ), polyaniline is widely used for printed circuit board manufacturing – in the final finish, for protecting copper from corrosion and preventing its solderability.

While cortical axons synapse mainly on spine heads of spiny neurons, nigral axons synapse mainly on spine shafts.

While Shea concentrated mainly on historical novels, Wilson produced over 30 works, mixing fictional novels with nonfiction.

While technically ' bong ' does not mean a device used for smoking mainly marijuana, drug-related connotations have been formed with the word itself ( partly due to punning with Sanskrit bhangah " hemp ").

While approximately four thousand Keyboard Components were manufactured before the module was canceled and recalled, it is not clear how many of them actually found their way into the hands of Intellivision customers.

While information on the various subtypes of the Krag-Jørgensen used in Denmark has proved difficult to find, at least the following subtypes were manufactured:

While a popular legend persists about a reward of US $ 40, 000 for Tubman's capture, this is a manufactured figure.

While most examples of such conditions are found in developing countries, clothes made in industrialized nations may also be manufactured similarly, often staffed by undocumented immigrants.

While palette knives are manufactured without sharpened cutting edges, with prolonged use they may become " sharpened " by the action of abrasive pigments such as earth colors.

While 12-volt audio and video systems are also used, marketed, or manufactured for marine, aviation, and buses, and even applications outside of automotive use like slot panels for demo models in stores prior to purchase, this article focuses on cars as the most common application.

While Axminster carpet is made in the town of Axminster, this type of carpet is now manufactured all over the world.

While canyoners have used and adapted climbing, hiking, and river running gear for years, more and more specialized gear is invented and manufactured as canyoning popularity increases.

While the first straight-six was manufactured in 1903 by Spyker, it was 1950 before a production V6 was introduced.

While some of the paraphernalia was crude and home-made, much was being commercially manufactured to cater to a fast-growing market which persists today.

While the sound produced is still called a “ ring ”, more-recently manufactured telephones electronically produce a warbling, chirping, or other sound.

While many subminiature cameras were inexpensive and poorly manufactured ( thus giving the format a bad name ), Minox, Tessina, Gami, Edixa, Rollei, Pentax and Minolta made quality cameras capable of producing fine results — even enlarged.

While several other karaoke labels manufactured Laserdiscs, there was nothing like the breadth of competition in that industry that exists now, as almost all manufacturers have transitioned to CD + G discs ( en route, possibly, to a new DVD-based format ).

While the Millennium train concept is an evolution of the Tangara concept ( manufactured by Goninan ), the Millennium train introduced new features such as internal electronic destination indicators, automated digital voice announcements ( DVA ) for upcoming stops, a return to reversible seating, surveillance cameras, wider stairways, a new safety yellow colour scheme, and push-button opened internal doors.

While the above weapons are similar in appearance to weapons made from shotguns, they were originally manufactured in the illustrated configuration and are not modified from existing shotguns.

While technically never a Lincoln and manufactured by a separate new division, Continental, the Mark II was sold and maintained through Lincoln dealerships, featured a Lincoln drivetrain, and sported a Lincoln-emulating spare tire hump in the trunk lid.

While this representation is schematically accurate, physically the devices are now manufactured as a single component.

While any pressure angle can be manufactured, the most common stock gears have a 20 ° pressure angle, with 14½ ° and 25 ° pressure angle gears being much less common.

While it may sound daunting, any weapon that needs to provide such exceptional sound suppression is almost certainly going to be manufactured in small quantities and issued only for mission profiles critical enough to make such efforts worthwhile.

While the Marmon Company discontinued auto production, they continued to manufacture components for other auto manufacturers and manufactured trucks.

While most manufactured goods would have been produced for a local market, there is some evidence that Birmingham was already a specialised and widely-recognised centre of the jewellery trade during the medieval period.

While the thermonuclear bomb designs tested by the U. K. during Operation Grapple were successful, they were never manufactured.

While other rubber products may use synthetic rubber, most rubber bands are primarily manufactured using natural rubber because of its superior elasticity.

While mobile manufactured buildings often decrease in value over time, a well-built modular building should retain value similarly to site-built structures.

While hushkits are normally found on older aircraft, small business jets and other aircraft too small to be fitted with large, high bypass turbofan engines will be manufactured with hushkits installed, a more economical way to meet noise restrictions than expensive engine or design changes.