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These were conducted at concentration levels ranging from those presently observed in the SCAB down to those predicted from the implementation of emission control strategies aimed at meeting State and Federal ambient air quality standards fro non-methane hydrocarbons , NO2 and oxidant . In all six countries , the understanding of Local Agenda 21 includes the rational use of natural resources , which is seen as ranging from the long-term security of quality of life to the closing of material cycles . Though they represented only themselves and not their official institutions , their words had weight and over time have born much fruit , reflected in numerous powerful statements by Christian groups on all levels ranging from the World Council of Churches and the Second Vatican Council ( Nostra Aetate , 1965 ) , on the one hand , to national and local Christian bodies on the other . There are plenty of student lessons and participatory activities to choose from ranging from those appropriate to 7th graders to those for highschoolers . Demography ( including biological , cultural , and legal components ) , politics ( at levels ranging from the local to the global ) , and use of the environment have vital linkages that anthropology is singularly well-suited to study , and these linkages are a focus of research in this department . But there are estimates that have been made and that one can make rough estimates of ranging from a third of total fuel supplies to , I ’ m convinced , as high as 100 percent in quite a number of countries that have relatively low levels of oil consumption , but very strong agricultural resource bases , particularly in the developing countries . Students have opportunities to investigate neural function in normal and disease states , and to address problems at different levels ranging from the regulation of nervous system genes to central nervous system mechanisms controlling arm movement in the intact animal .