Watershed

3. Water that is held underground in the soil or in pores and crevices in rock.
7. Borders The official boundaries that separate different countries, states, or regions.
9. The aggregate of people living together in a more or less ordered community.
10. The surroundings or conditions in which a person, animal, or plant lives or operates.
11. Land consisting of marshes or swamps; saturated land.
14. The preservation and protection of natural resources and the environment.
15. A system formed by the interaction of a community of organisms with their physical environment.

1. All of the land that drains into a single location or body of water.
2. The variety of life in a particular habitat or ecosystem.
4. The study of the movement, distribution, and quality of water throughout the Earth.
5. A device with a broad, cone-shaped mouth and a narrow tube, used for guiding liquid or powder into a small opening. In this context, it is used as a metaphor for how a watershed collects water.
6. The introduction of harmful substances or products into the environment.
8. To direct or guide along a particular course.
12. To flow off or away, as water does from a surface.
13. The system by which a country's goods and services are produced and distributed.