Bronze is an alloy of copper and either zinc or tin.
Alloy - A substance made by the mixture of two or more elements, at least one of which is a metal.
Alloys are often stronger and more durable than pure metals.
In some instances, however, running water carries away nutrients from exposed soils and creates areas unsuitable for agriculture.
Amphora - A two-handled pottery jar with a narrow neck used by the ancient Greeks and Romans to carry liquids, especially wine and oil.
Aristocracy - A governing body of upper class citizens or the system of government in which aristocrats (upper class citizens) have controlling power. Bulbar depression - A depression left on the core (where a flake's bulb of percussion was attached) when a blade or flake was struck off. Ceramics - Objects, often pottery, made of fired or baked clay.
In an aristocracy people are generally born into distinct social classes and there is little or no upward mobility. Chert - A fine-grained sedimentary rock, similar to flint, that is white, pinkish, brown, gray, or blue-gray in color.Archaeozoology - The study of animal remains, usually bones, from the past. Archaic - In archaeology, this term is often used to designate an early period in a culture's history. Boat grave - A type of burial in which a body (or cremated remains) is placed in a boat and buried in the ground. Cache (pronounced "cash") - A collection of objects that was purposefully buried.In Greece it designates the chronological period that preceded the classical period. Such a burial often symbolized the deceased's high status. Canopic vase or jar - A container or small jar used in ancient Egypt to hold the internal organs of a person who had been mummified.It is generally a raised area above the rest of the city where the most important sacred and secular buildings are brought together.The buildings on the Athenian Acropolis were important for trade and worship.All the sub-disciplines study aspects of past or present humans.