| A | B |
|---|
| contiguous | joined together inside a common boundary |
| megalopolis | huge urban area |
| coral reef | formed from skeletons of small sea animals |
| free enterprise system | individuals have the right to run businesses to make a profit |
| service industry | businesses that provides services instead of producing goods |
| navigable | wide and deep enough to allow the passage of ships |
| fossil fuel | coal, oil, and natural gas |
| acid rain | rain containing high amount of chemical pollutants. |
| landfill | the areas where trash companies dump the waste they collect and it grows higher and higher |
| recycling | reusing materials instead of throwing them out |
| free trade | taking down trade barriers such as tariffs |
| colony | overseas settlements tied to a parent country |
| representative democracy | voters choose leaders who make and enforce the laws |
| federal republic | power is divided between the federal government and state government |
| secede | withdrew from the national government |
| immigrant | people who move to a new country to make a permanent home |
| rural | countryside |
| urban | city |
| suburb | smaller commounties surrounding a larger city |
