The two words, economics and ecology have the same root. “Eco” means home. Economics is the management of the home and ecology is the study of the home. In the issue of large hog barn development it is important to remember that the economic and the ecological concerns are intertwined and cannot be separated Air Pollution Air is an important natural resource providing the basis of life on earth. Entire biosphere depends on air. Air in the atmosphere provides oxygen to plants and animals, by virtue of which they are able to live. The composition of air (78% N, 21% O, 0.03% CO2) is necessary to be maintained for the continuance of life on earth. Impairment of composition of air directly affects the living of plants and animals - as the life process would be curtailed in case of reduction in oxygen content in air. Polluting such a natural resource by various human activities will substantially change the composition of air. This may lead to many short term and long term implications on the life of plants and animals. Besides the change in composition, the pollution may directly add some poisonous and harmful gases - which may cause series of health complications. Water Pollution Pollution of water is a broad subject dealing with different types of pollutants entering the hydrological cycle. Surface flowing river water, underground water and vast sea water are included in a broad subject of water pollution. Out of them, drinking water pollution is most important, as such a pollution is directly connected with human health. Water being indispensable part of human body, the daily intake of water is of utmost important for all physiological activities. If such daily used drinking water is polluted - the health of human beings will be badly affected. A general information about water pollution is presented below-with an emphasis on drinking water pollution. Concentration of livestock production turns nutrients into poisons, provides an environment for disease epidemics, overwhelms capacity of local ecosystem to cycle nutrients, and depletes areas from which resources are removed. It is no longer farming, but an industrial process.