The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 2005 |
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Page 303
... span is about one year , Life span although there are notable exceptions . Prosobranchs in general seem to have a much longer life span , with some species of the freshwater Vivipara having lived 20 years in captivity . Some Sonoran ...
... span is about one year , Life span although there are notable exceptions . Prosobranchs in general seem to have a much longer life span , with some species of the freshwater Vivipara having lived 20 years in captivity . Some Sonoran ...
Page 304
... span of 20 to 50 years . Several trends are evident in gastropod evolution from this basic pattern . First , there is a tendency toward the development of structures to permit internal fertilization . Pallial reproductive tubes of male ...
... span of 20 to 50 years . Several trends are evident in gastropod evolution from this basic pattern . First , there is a tendency toward the development of structures to permit internal fertilization . Pallial reproductive tubes of male ...
Page 319
... span of cephalopods . Stud- Life span ies have shown that in Octopus joubini raised from the egg in aquariums , sexual maturity and spawning were reached in five months ; in a loliginid squid ( Sepioteuthis sepi- oidea ) , likewise ...
... span of cephalopods . Stud- Life span ies have shown that in Octopus joubini raised from the egg in aquariums , sexual maturity and spawning were reached in five months ; in a loliginid squid ( Sepioteuthis sepi- oidea ) , likewise ...
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albite amphiboles ancient aragonite areas atoms basalt bivalves body calcite calcium called carbonate central centre century cephalopods chemical clay minerals colour common composition contain crust crystals ctenidia cult cultural deities deposits developed dolomite Earth economic eggs electron evaporite example existence facies feldspar Figure garnet gastropods goddess gods grains Hittite human igneous rocks important industrial kaolinite king known layers limestone magma magnetic major mantle cavity marine material mental metamorphic rocks metaphysics Mexican Mexico City mica Michelangelo microscope millimetres Milton mimicry mind Mineralogy modern Molière Mongolia Mongols Moscow myth nature object occur ocean olivine organic originally oxide percent period philosophers physical plagioclase political population pressure produced properties pyroxene quartz reaction region religion religious reprinted result sandstones sedimentary rocks sediments shell silicate smectite snails society species structure Sumerian surface temperature temple tetrahedrons texture tion typically United urban volcanic