World is the planet earth viewed especially as the home of human beings and other living things. The earth is just one of countless heavenly bodies in the universe. But it is the only one known to support life...

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World Bank is an international organization that provides loans to governments and private firms for development projects, such as irrigation, education, and housing. It also grants loans to support government policies that it believes will strengthen a country's economy, such as lower import tariffs and more efficient judicial systems. The bank's official name is the International Bank for Reconstruction and Development...

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World Trade Organization is an international organization that promotes trade in goods and services between nations. Most nations belong to the World Trade Organization, often called the WTO...

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World Wide Web is the part of the Internet that provides sounds, pictures, and moving images in addition to text. The Internet links computers and computer networks around the world, but the portion of the network not on the World Wide Web (often called the Web, for short) contains only text information. The Web, however, has multimedia capabilities--including graphics, audio, and video. The Web is made up of electronic addresses called Web sites, which contain Web pages that hold the multimedia information. Web sites and their pages reside in computers connected to the Internet...

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Worm is any of several kinds of animals that have a soft, slender body and no backbone or legs. There are thousands of kinds of worms. The largest species measure many feet or meters long, and the smallest ones cannot be seen without a microscope. Some worms live in water or soil. Many of these free-living worms eat small plants and animals, and others feed on decaying matter. Still other worms live as parasites in various animals and plants. They cause a number of diseases...

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Wren is the name of a group of small, energetic birds found in most parts of the world. These birds are extremely protective of their nests. Some wrens are known to enter nearby nests of other birds and pierce the eggs. Wrens eat insects and seeds that they find in underbrush and tangled root growths. They sing melodiously, but can also make harsh, chattering sounds. There are 63 types of wrens, most of which live in Asia and the Americas. Only one kind lives in Europe...

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Wrestling, pronounced REHS lihng, is a sport in which two opponents try to pin (hold) each other's shoulders to a mat on the floor. Wrestlers use maneuvers called holds to grasp their opponents and control their movements...

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Wright brothers --Wilbur (1867-1912) and Orville (1871-1948)--invented and built the first successful airplane. On Dec. 17, 1903, they made the world's first flight in a power-driven, heavier-than-air machine near Kitty Hawk, North Carolina. With Orville at the controls, the plane flew 120 feet (37 meters) and was in the air 12 seconds. The brothers made three more flights that day. The longest, by Wilbur, was 852 feet (260 meters) in 59 seconds...

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Wrist is the joint that connects the hand and the forearm. A person uses the wrist to move the hand up, down, and sideways. The word wrist also refers to an area of the upper part of the hand. This area includes eight small bones called carpals...

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Wrist is the joint that connects the hand and the forearm. A person uses the wrist to move the hand up, down, and sideways. The word wrist also refers to an area of the upper part of the hand. This area includes eight small bones called carpals...

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