| A | B |
|---|
| contiguous | areas that are joined together inside a common boundary |
| megalopolis | huge urban settlement made up of several large cities |
| coral reef | structure formed by the skeletons of small sea animals |
| free enterprise system | economic system that operates on free competitition, in which people start and own businesses with limited government intervention |
| fossil fuel | fuel formed in the earth, such as coal, oil, or natural gas |
| landfill | area where trash companies dump the waste they collect |
| recycling | reusing materials instead of throwing them away |
| free trade | trade without barriers like tariffs or quotas so that goods flow freely between countries |
| representative democracy | government where the people are represented by elected leaders |
| federal republic | form of government in which the national and state governments share powers |
| amend | to change the basic laws of a government |
| ethnic group | people who share a common culture, language, or history |
| rural | relating to the countryside |
| urban | relating to the city |
| suburb | smaller community located in the area surrounding a city |
