Earth Revealed
Groundwater (5x3)
Air date: Jul 06, 1992
Approximately three-quarters of Earth's surface is covered by water. But most fresh water comes from underground. Topics of this program include aquifers, rock porosity and permeability, artesian wells, the water table, cave formation, sinkholes, and how groundwater may become contaminated.
- Premiered: Feb 1992
- Episodes: 26
- Followers: 0