| A | B |
| Natural Resource | Material from the Earth that people use to meet their needs |
| Recycle | to process in order to regain materials for human use |
| Renewable | natural resouce that can be replaced or grown again |
| Non-renewable | natural resources such as a mineral that cannot be replaced |
| Megalopolis | huge urban areamade up of several large cities and nearby communities |
| Population density | average number of people living in a square mile |
| Bay | body of water partly surrounded by land and partly open to a larger body of water. The larger body of water can be an ocean, sea, or lake. |
| Urban | consisting of cities or towns; the opposite of rural. Urban areas may be centers of manufacturing, trade, finance or government |
| Rural | Belonging to the countryside as opposed to cities. |