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Key Concept is
Meteorology -- Water cycle
1 - 5
Why Is the Ocean Salty
This is a well written and easy-to-understand primer with definition and measurements of salinity. Explains the origin of the ocean, sources of salts and processes affecting its chemical composition, including the...
Restoring Life to the Dead Zone: Addressing Gulf Hypoxia, a National Problem
This United States Geological Survey (USGS) fact sheet provides an introductory synopsis of some of the causes of poor water quality in the Gulf of Mexico. The dead zone is caused by increased nutrients from the...
Aquifer Maps and Maine Ground Water
In this activity, students will develop an understanding of the dynamics of ground water; understand the interrelations between ground water and surface water; and increase their knowledge of surficial and bedrock...
A Measure of Maine's Water in a Typical Year
In this activity, students will refer to a graph of hydraulic measures of water for the state of Maine to gather and interpret statistics on precipitation, stream flow, depth to groundwater, and others; and examine an...
USGS Water Oriented Data Sources
This page from the GeoTech Center provides a link to the U.S. Geological Survey's water oriented data sources webpage, which provides a wealth of information on water resources, data for each state and general...
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