| A | B |
| suburb | a usually residential area or community on the outer edge of a city |
| megalopolis | a very large city; a region made up of several large cities and their surrounding areas, considered to be a single urban complex |
| mangrove | a tropical tree that grows in swampy ground along coastal areas |
| bayou | a marshy inlet of a lake or a river |
| Sunbelt | the southern and southwestern states of the US, from the Carolinas to southern California, characterized by a warm climate and, recently, rapid population growth |
| silo | a tall, round, airtight building used for the storage of grain |
| growing season | in farming, the average number of days between the last frost of spring and the first frost of fall |
| grain elevator | a tall building equipped with machinery for loading, cleaning, storing, and discharging grain |
| grain exchange | a place where grain is bought and sold as a commodity |
| aqueduct | a large pipe or channel designed to transport water from a remote source over a long distance, usually by gravity |