The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
From inside the book
Results 1-3 of 75
Page 143
... becomes contaminated from direct appli- cation , drift , runoff from treated areas , or waste materi- als . Minute quantities of pesticides become airborne from volatilization and wind erosion . Many of these chemicals are short - lived ...
... becomes contaminated from direct appli- cation , drift , runoff from treated areas , or waste materi- als . Minute quantities of pesticides become airborne from volatilization and wind erosion . Many of these chemicals are short - lived ...
Page 147
... become an endless process because of the ability of pest species to change into new forms ( biotypes ) capable of attacking a previously resis- tant variety . The development of new biotypes appears to occur more rapidly among the ...
... become an endless process because of the ability of pest species to change into new forms ( biotypes ) capable of attacking a previously resis- tant variety . The development of new biotypes appears to occur more rapidly among the ...
Page 970
... become the embryo ( the embryonic disk ) form a thickened layer on one side of the bubble . Elsewhere , the walls of ... become the fluid - filled cho- rionic cavity containing the embryo . Ultimately it will contain the amniotic fluid ...
... become the embryo ( the embryonic disk ) form a thickened layer on one side of the bubble . Elsewhere , the walls of ... become the fluid - filled cho- rionic cavity containing the embryo . Ultimately it will contain the amniotic fluid ...
Other editions - View all
Common terms and phrases
activity America animals appear areas atoms became become body called camera century changes characteristics chemical Church colour common complete compounds consists containing continued drugs early effect electrons elements energy example existence experience Family field Figure fins fishes groups human important increase individual industry Italy known later lens less light liquid living lower major material means ment methods move movement natural North object occur organic original Peking Pentecostal percent period permafrost personality pest Peter petroleum Philip philosophy photographs plants political position possible practice present printing problems production Quakers range region result rocks similar social South species structure surface temperature theory tion United usually widely