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4 days ago · dinosaur, (clade Dinosauria), the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago (near the beginning of the Middle Triassic Epoch) and thrived worldwide for nearly 180 million years. Most died out by the end of the Cretaceous Period, about 66 million years ago, but many lines of ...
5 days ago · bribery, the act of promising, giving, receiving, or agreeing to receive money or some other item of value with the corrupt aim of influencing a public official in the discharge of his official duties. When money has been offered or promised in exchange for a corrupt act, the official involved need not actually accomplish that act for the ...
2 days ago · e. Race is a categorization of humans based on shared physical or social qualities into groups generally viewed as distinct within a given society. [1] The term came into common usage during the 16th century, when it was used to refer to groups of various kinds, including those characterized by close kinship relations. [2]
4 days ago · superpower, a state that possesses military or economic might, or both, and general influence vastly superior to that of other states. Scholars generally agree on which state is the foremost or unique superpower—for instance, the United Kingdom during the Victorian era and the United States during and immediately after World War II —but ...
4 days ago · asteroid, any of a host of small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring called the asteroid belt. It is because of their small size and large numbers relative to the major planets that asteroids are also called minor planets.
3 days ago · island, any area of land smaller than a continent and entirely surrounded by water. Islands may occur in oceans, seas, lakes, or rivers. A group of islands is called an archipelago. Islands may be classified as either continental or oceanic. Oceanic islands are those that rise to the surface from the floors of the ocean basins. Continental ...
4 days ago · Asia is the largest continent on Earth. It covers 9% of the Earth's total surface area (or 30% of its land area), and has the longest coastline, at 62,800 kilometres (39,022 mi). Asia is generally defined as comprising the eastern four-fifths of Eurasia.
