The New Encyclopædia Britannica, Volume 16Encyclopaedia Britannica, 1981 - Encyclopedias and dictionaries |
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Page 59
... organic substances and organisms to be poisoned by toxic materials . When organic matter ex- ceeds the capacity of those micro - organisms in water that break it down and recycle it , the excess of nutrients in such matter encourage ...
... organic substances and organisms to be poisoned by toxic materials . When organic matter ex- ceeds the capacity of those micro - organisms in water that break it down and recycle it , the excess of nutrients in such matter encourage ...
Page 781
... organic compounds necessary for life from simple in- organic raw materials ; consequently , they require only simple nutrients from the environment . By contrast , heterotrophic organisms cannot manufacture complex organic compounds ...
... organic compounds necessary for life from simple in- organic raw materials ; consequently , they require only simple nutrients from the environment . By contrast , heterotrophic organisms cannot manufacture complex organic compounds ...
Page 1105
... organic products of a kind used as luminophores , products of the kind known as optical bleaching agents ... organic or in- organic substances present in the material , or from a purely physical effect , such as that observed in oil ...
... organic products of a kind used as luminophores , products of the kind known as optical bleaching agents ... organic or in- organic substances present in the material , or from a purely physical effect , such as that observed in oil ...
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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