Reference
Loading content...
Groundwater
- Entry
- Reader's Guide
- Entries A-Z
- Subject Index
-
Water exists in many forms including water vapor, liquid, and ice, all of which are found on Earth including atmospheric moisture, precipitation, soil moisture, groundwater, ice, snow, oceans, and seas; within plants and animals; in lakes, streams, and rivers; and in man-made reservoirs. Water cycles between these forms both visibly, as when atmospheric moisture falls as rain, and invisibly, as when precipitation seeps into the soil to become groundwater. Water makes up 70 percent of the Earth's surface. Most of the water is contained in the oceans, with only a small percentage available as freshwater, most of which is frozen in glaciers.
Groundwater reaches the surface through springs like this one in the Westcave Preserve in Texas. Groundwater is the biggest source of freshwater for ... -
- Agenda 21
- Bhopal
- Brundtland Commission
- Bureau of Land Management, U.S.
- Clean Air Act
- Clean Water Act
- Club of Rome
- Copenhagen Summit
- Corporate Responsibility
- Department of Energy, U.S.
- Endangered Species Act
- Environmental Nongovernmental Organizations
- Environmental Protection Agency, U.S.
- Fish and Wildlife Service, U.S.
- Forest Service, U.S.
- Institutions
- Intergovernmental Panel on Climate Change
- Kyoto Protocol
- Land Ethic
- Marine Mammal Protection Act
- Montreal Protocol
- NIMBY
- North American Free Trade Agreement Organizations
- Sagebrush Rebellion
- Stockholm Convention
- Transnational Advocacy Organizations
- Wise Use Movement
- World Trade Organization
-
- B
- C
- D
- E
- F
- G
- I
- K
- L
- M
- N
- O
- P
- R
- S
- T
- U
- W
-
165523- Loading...
Similar content on SAGE Knowledge
Loading content...Keywords
Also from SAGE Publishing
- CQ Library American political resources opens in new tab
- Data Planet A universe of data opens in new tab
- Lean Library Increase the visibility of your library opens in new tab
- SAGE Journals World-class research journals opens in new tab
- SAGE Research Methods The ultimate methods library opens in new tab
- SAGE Stats Data on demand opens in new tab