The New Encyclopædia Britannica, Volume 16Encyclopaedia Britannica, 1981 - Encyclopedias and dictionaries |
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Page 643
... changes of various kinds , all of which could be regarded as in some sense developmental ; however , biologists have found it convenient to distinguish the changes and to use the word development for only one of them . Bio- logical ...
... changes of various kinds , all of which could be regarded as in some sense developmental ; however , biologists have found it convenient to distinguish the changes and to use the word development for only one of them . Bio- logical ...
Page 862
... changes that can be considered as manifestations of aging . During the first half of life these changes are generally referred to as maturation ; during the last half of life , as progres- sive senescence . Visual acuity , sensitivity ...
... changes that can be considered as manifestations of aging . During the first half of life these changes are generally referred to as maturation ; during the last half of life , as progres- sive senescence . Visual acuity , sensitivity ...
Page 914
... changes , however , the equilibrium number is subject to change . The shifting of average temperature over a long period of time in water , for ex- ample , may enable more species to exist at a given posi- tion in that body of water ...
... changes , however , the equilibrium number is subject to change . The shifting of average temperature over a long period of time in water , for ex- ample , may enable more species to exist at a given posi- tion in that body of water ...
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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