The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 39
... natural resources Renewable resources Plants and animals Ecosystems Solar energy , air , and water Nonrenewable resources Fossil fuels Nuclear fuels Minerals IV . Management of natural resources Managing nonliving resources Soils Water ...
... natural resources Renewable resources Plants and animals Ecosystems Solar energy , air , and water Nonrenewable resources Fossil fuels Nuclear fuels Minerals IV . Management of natural resources Managing nonliving resources Soils Water ...
Page 40
... natural - resource " wants . ” These include the materials , experiences , or space needed to make existence more enjoyable . Agricultural and urban development . The development of agriculture enabled map to produce greater amounts of ...
... natural - resource " wants . ” These include the materials , experiences , or space needed to make existence more enjoyable . Agricultural and urban development . The development of agriculture enabled map to produce greater amounts of ...
Page 1111
... Natural Green 3 , C.I. 75810 for soaps , oils , perfumes , foodstuffs CH Н.С H H.C HC H2 , C20,0 H Ē H HY o CO , CH , 39 HO Melanin C.1 . Natural Brown 9 complex ; derived from 5 , 6 - dihydroxyindole artists ' watercolour HO H Derived ...
... Natural Green 3 , C.I. 75810 for soaps , oils , perfumes , foodstuffs CH Н.С H H.C HC H2 , C20,0 H Ē H HY o CO , CH , 39 HO Melanin C.1 . Natural Brown 9 complex ; derived from 5 , 6 - dihydroxyindole artists ' watercolour HO H Derived ...
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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