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Soil and Water Assessment Tool (SWAT) is a free and open source hydrology model and GIS computer simulation sponsored by the USDA. SWAT is a well known geographic hydrological model in use by many universities and government agencies around the world, and integrates with commercial products like ArcGIS.
SWAT is a continuous time model that operates on a daily time step at basin scale. The objective of such a model is to predict the long-term impacts in large basins of management and also timing of agricultural practices within a year (i.e., crop rotations, planting and harvest dates, irrigation, fertilizer, and pesticide application rates and timing).
Radium and radon are important contributors to environmental radioactivity. Radon occurs naturally as a result of decay of radioactive elements in soil and it can accumulate in houses built on areas where such decay occurs. Radon is a major cause of cancer; it is estimated to contribute to ~2% of all cancer related deaths in Europe. [1]
Unlike other environmental issues like climate change and deforestation, the problem of light pollution could be curbed overnight — by turning off the lights. In 2020, the small town of Crestone ...
Phil, guided by handlers and his shadow-based predictions, came in 17th out of 19 critters ranked by National Oceanic and Atmospheric Administration’s National Centers for Environmental ...
The U.S. Environmental Protection Agency concluded supplemental air monitoring in the vicinity of the Vistra Energy storage facility and said in a statement that there was, "no risk to public ...
Radon has been produced commercially for use in radiation therapy, but for the most part has been replaced by radionuclides made in particle accelerators and nuclear reactors. Radon has been used in implantable seeds, made of gold or glass, primarily used to treat cancers, known as brachytherapy. The gold seeds were produced by filling a long ...
The agency makes exceptions to these guidelines, including when a fire threatens "life or property" and "the risk of damage to natural resources outweighs the risk of impacts to aquatic life ...
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