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Natural variations in pH and oxygen status are also important and are not restricted to deep environments. Many groundwaters in tropical regions in weathered basement aquifers and alluvial sequences have low pH, and the reducing conditions which prevail can promote the mobilisation of metals and other parameters of health significance such as arsenic. Thus prevailing hydrochemical conditions of the groundwater that are naturally present and develop need to be taken into account when: (i) developing schemes for groundwater abstraction for various uses and in protecting groundwater; and (ii) considering the transport and attenuation of additional chemicals entering groundwaters due. | On the Segregation of Genetically Modified Conventional and Organic Products in European Agriculture A Multi-market Equilibrium Analysis GianCarlo Moschini Harun Bulut and Luigi Cembalo Working Paper 05-WP 411 October 2005 Center for Agricultural and Rural Development Iowa State University Ames Iowa 50011-107o www.card.iastate.edu GianCarlo Moschini is a professor of economics and Pioneer Endowed Chair in Science and Technology Policy Harun Bulut is a post-doctoral fellow and Luigi Cembalo was a visiting scientist all with the Department of Economics at Iowa State University. Moschini and Bulut developed calibrated and simulated the model and wrote the paper. Cembalo assembled the data used in the calibration. The support of the U.S. Department of Agriculture through a National Research Initiative grant is gratefully acknowledged. This paper is available online on the CARD Web site www.card.iastate.edu. Permission is granted to reproduce this information with appropriate attribution to the authors. Questions or comments about the contents of this paper should be directed to GianCarlo Moschini 583 Heady Hall Iowa State University Ames IA 50011-1070 Ph 515 294-5761 Fax 515 294-6336 E-mail moschini@iastate.edu. The U.S. Department of Agriculture USDA prohibits discrimination in all its programs and activities on the basis of race color national origin gender religion age disability political beliefs sexual orientation and marital or family status. Not all prohibited bases apply to all programs. Persons with disabilities who require alternative means for communication of program information Braille large print audiotape etc. should contact USDA s TARGET Center at 202 720-2600 voice and TDD . To file a complaint of discrimination write USDA Director Office of Civil Rights Room 326-W Whitten Building 14th and Independence Avenue SW Washington DC 20250-9410 or call 202 720-5964 voice and TDD . USDA is an equal opportunity provider and employer. Iowa State University does
