Archaeology dating metal
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.
Alluvial soils are usually nutrient-rich and good for agriculture.
Aerial Photography - The various techniques of taking photographs of natural or cultural features from the air, using balloons, airplanes, satellites, and other sources, in order to study the features in their entirety from a top-down (bird's eye) view.
Aerial Reconnaissance - The technique of searching for sites and features, both cultural and natural, from the air, often using aerial photography or the human eye.
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.
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In the New World the term refers to a period when permanent settlements were becoming more common and human groups were making the transition from hunting-and-gathering to agriculture. Bronze Age - A prehistoric period in the Old World, dating roughly from 3000-1000 B. E, defined by the widespread use of bronze as a material for tools, weapons, and ornaments. The lids were usually modeled to represent animal-headed gods or the heads of important people.