Word: biomass
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Dates: during 1942-1942
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...years have most scientists' eyes opened to the fact that these plagues are periodic, ebbing & flowing almost as regularly as the tides. Says Zoologist Elton: animal populations were formerly thought to be fairly stable, fluctuating only by chance. Now they are known to recur regularly, so that the biomass-"the living fabric of the world" -may be said to pulsate like the diastole and systole of a mighty heart...