When one person intentionally kills another without legal justification or excuse, the crime is called murder. The clearest example of this is a case where one person deliberately kills another because of hatred, envy, or greed. But there are also situations where a killing is considered murder even when no specific intent to kill exists.

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Imagination is the capacity to consider objects or events in their absence or as they might be. Imagination may refer to many things, such as fantasy, ingenuity, daydreaming, and make-believe. But it often involves the use of mental imagery, which is the ability to call to mind the sensations of sights, sounds, tastes, smells, and touches that have been experienced.

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Acid rain is a term for rain, snow, sleet, or other wet precipitation that is polluted by such acids as sulfuric acid and nitric acid. Acid rain harms thousands of lakes, rivers, and streams worldwide, killing fish and other wildlife. It also damages buildings, bridges, and statues. High concentrations of acid rain can harm forests and soil.

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Sewage is water that contains waste matter produced by human beings. It is also called wastewater. It contains about a tenth of 1 per cent solid matter. Sewage comes from the sinks and toilets of homes, restaurants, office buildings, and factories. It contains dissolved material that cannot be seen, plus bits of such solid matter as human waste and ground-up garbage.

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Supply and demand are economic forces that determine the amount of a product that is produced and its price. The supply of a product is the amount of it that businesses are willing and able to offer for sale at alternative prices. Generally, the higher the price is, the greater the amount supplied will be. Similarly, the demand for a product is the amount of it that users can and would like to buy at alternative prices.

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Torture is the use of physical or mental pain, often to obtain information, to punish a person, or to control the members of a group to which the tortured person belongs. Torture began as a legal procedure and was typically used to gain a confession for use as legal proof. Early Greek and Roman law permitted the torture of slaves, foreigners, and people considered dishonorable.

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Value-added tax is a tax imposed by a government at each stage in the production of a good or service. The tax is paid by every company that handles a product during its transformation from raw materials to finished goods. The amount of the tax is determined by the amount of the value that a company adds to the materials and services it buys from other firms.

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Stone Age is a term used to designate the period in all human cultures when people used stone, rather than metal, tools. The Stone Age began about 21/2 million years ago, when small stones were first made into crude chopping tools. It ended in the Near East about 3000 B.C., when bronze replaced stone as the chief material from which tools were made.

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Parsley is a biennial vegetable, sometimes considered as an herb. It is closely related to caraway. The most popular variety produces a low-growing rosette of finely curled and crumpled green leaves. Another variety of parsley produces plain leaves. The fresh leaves are used mainly to decorate meat dishes and salads. The leaves of parsley can also be dried and used in soups.

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Gogol, Nikolai, (1809-1852), was a major Russian playwright, novelist, and short story writer. In the West, his writing is admired for its ornamental use of language, its romantic treatment of theme, and its use of the fantastic, the grotesque, and caricature. In Russia, he is best loved as a humorist.

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