The New Encyclopaedia Britannica, Volume 4Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 86
... occur in many different kinds of rocks and because they crystallize from silica melts in a definite sequence ( see Bowen's reac- tion series ) . In addition to igneous rocks , feld- spars occur in gneisses , schists , and other ...
... occur in many different kinds of rocks and because they crystallize from silica melts in a definite sequence ( see Bowen's reac- tion series ) . In addition to igneous rocks , feld- spars occur in gneisses , schists , and other ...
Page 474
... occurred when the Earth was hotter than it is now ; the resulting lower viscosity would have allowed faster differentiation than could occur now , but differentiation still may be taking place at a rather slow rate . Secondary ...
... occurred when the Earth was hotter than it is now ; the resulting lower viscosity would have allowed faster differentiation than could occur now , but differentiation still may be taking place at a rather slow rate . Secondary ...
Page 906
... occur because of the various genet- ic combinations that result from random mat- ing of individuals , but non - random , or selec- tive , mating must occur for natural selection to take place . Certain gene - controlled traits are ...
... occur because of the various genet- ic combinations that result from random mat- ing of individuals , but non - random , or selec- tive , mating must occur for natural selection to take place . Certain gene - controlled traits are ...
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