city-state
An independent state consisting of a city and its surrounding lands.
Subject:
Interdependence
chlorofluorocarbon (CFC)
A gas containing carbon, hydrogen, chlorine, and fluorine. It is used in refrigerators and aerosol sprays. CFCs are reputed to be damaging to the Earthﾒs protective ozone layer.
Subject:
Byzantine Empire
(330-1453) The eastern half of the Roman Empire, which survived after the fall of the Western Empire at the end of the 5th century C.E. Its capital was Constantinople, named after the Emperor Constantine.
Subject:
artisan
A person who is skilled at a craft, such as weaving, or woodcarving.
Subject:
arable
Land that is able to support the growing of crops.
Subject:
Age of Exploration
Time period during the 15th and 16th centuries when Europeans searched for new sources of wealth and for easier trade routes to China and India. Resulted in the discovery of North and South America by the Europeans.
Subject:
acid rain
Rain that contains pollutants due to the burning of fossil fuels. It is damaging to the environment.
Subject:
Pages
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