The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 49
... pollution were enacted . As a result , air pollution from industrial sources and space heating has been greatly reduced . At the same time , however , the less visible but equally dangerous pollution from automobile engines has ...
... pollution were enacted . As a result , air pollution from industrial sources and space heating has been greatly reduced . At the same time , however , the less visible but equally dangerous pollution from automobile engines has ...
Page 58
... POLLUTION OF NATURAL RESOURCES national Trade in Endangered Species of Wild Fauna and Although various problems related to pollution of the Flora , which prohibited commercial trade in 375 endan- environment have already been mentioned ...
... POLLUTION OF NATURAL RESOURCES national Trade in Endangered Species of Wild Fauna and Although various problems related to pollution of the Flora , which prohibited commercial trade in 375 endan- environment have already been mentioned ...
Page 59
... pollution . The runoff from septic tanks and the outflow of manures from livestock feedlots along the watershed are sources of organic pollutants . Industries located along waterways downstream contribute a number of chemical pollutants ...
... pollution . The runoff from septic tanks and the outflow of manures from livestock feedlots along the watershed are sources of organic pollutants . Industries located along waterways downstream contribute a number of chemical pollutants ...
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activity American animals appear areas authority become body called cause cells central century charge common complex conservation consists constant constitution consumer contain continental continued copper cosmic rays countries court crime criminal Crusade direct early effect electron elements energy England established Europe evidence example exist fact field force ground groups House important increase individual industrial involved Italy known land later less letters limited living major material means measure ment metal natural occur organic original particles particular party percent period person play political population position present problems protection reefs region remains result rule social South species structure theory tion United usually various