The New Encyclopædia Britannica, Volume 16Encyclopaedia Britannica, 1981 - 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 auto- mobile 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 auto- mobile engines has ...
Page 58
... POLLUTION OF NATURAL RESOURCES Although various problems related to pollution of the environment have already been mentioned , the following is a more general discussion of pollution as a phenome- non . Pollution may be defined as the ...
... POLLUTION OF NATURAL RESOURCES Although various problems related to pollution of the environment have already been mentioned , the following is a more general discussion of pollution as a phenome- non . Pollution may be defined as the ...
Page 59
... pollution . The runoff from septic tanks and the outflow of manures from livestock feedlots along the watershed are sources of organic pollutants . Indus- tries located along waterways downstream contribute a number of chemical ...
... pollution . The runoff from septic tanks and the outflow of manures from livestock feedlots along the watershed are sources of organic pollutants . Indus- tries located along waterways downstream contribute a number of chemical ...
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19th century Africa American animals areas became bee-eaters cells centimetres central centre century Church collagen conifers connective tissue conodonts conservation conservatism constitution continental continental drift copper Coraciiformes coral cosmic rays countries court covenant Cretaceous Crete cricket crime criminal Cro-Magnon crocodiles Crusade cultural deposits disease early Earth economic effect energy England Europe federal forest fossil France French function genera geosynclines groups hoopoes hornbills illus important industrial Iráklion island King known land later Le Corbusier legislation major ment metres minerals modern natural North Nyssaceae occur ocean Ordovician organized original Parliament particles party percent period plants political pollution population problems protection reefs region result River rock Roman Saladin sediments social South Soviet species structure theory tion town trade traditional trees tropical trouvères Union United usually western