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The major applications of copper are in electrical wires (60%), roofing and plumbing (20%) and industrial machinery (15%). Copper is mostly used as a pure metal, but when a higher hardness is required it is combined with other elements to make an alloy (5% of total use) such as brass and bronze. A small part of copper supply is used in production of compounds for nutritional supplements and fungicides in agriculture. Machining of copper is possible, although it is usually necessary to use an alloy for intricate parts to get good machinability characteristics.
What is a plant that copper is combined with to create a smoother texture?
A: unanswerable

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In some species, both parents care for nestlings and fledglings; in others, such care is the responsibility of only one sex. In some species, other members of the same speciesusually close relatives of the breeding pair, such as offspring from previous broodswill help with the raising of the young. Such alloparenting is particularly common among the Corvida, which includes such birds as the true crows, Australian magpie and fairy-wrens, but has been observed in species as different as the rifleman and red kite. Among most groups of animals, male parental care is rare. In birds, however, it is quite commonmore so than in any other vertebrate class. Though territory and nest site defence, incubation, and chick feeding are often shared tasks, there is sometimes a division of labour in which one mate undertakes all or most of a particular duty.
True crows belong to what group?
A: Corvida

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The Earth contains about 434 billion cubic meters of growing stock forest, 47% of which is commercial. As an abundant, carbon-neutral renewable resource, woody materials have been of intense interest as a source of renewable energy. In 1991, approximately 3.5 cubic kilometers of wood were harvested. Dominant uses were for furniture and building construction.
How many cubic meters of growing stock forest are there on the planet?
A: 434 billion

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New York City is home to Fort Hamilton, the U.S. military's only active duty installation within the city. Established in 1825 in Brooklyn on the site of a small battery utilized during the American Revolution, it is one of America's longest serving military forts. Today Fort Hamilton serves as the headquarters of the North Atlantic Division of the United States Army Corps of Engineers as well as for the New York City Recruiting Battalion. It also houses the 1179th Transportation Brigade, the 722nd Aeromedical Staging Squadron, and a military entrance processing station. Other formerly active military reservations still utilized for National Guard and military training or reserve operations in the city include Fort Wadsworth in Staten Island and Fort Totten in Queens.
The U.S. military has only one active location in NYC named what?
A:
Fort Hamilton