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| | Population - Encyclopedia, History, Geography and Biography |
 | | These, or other factors, may lead to a small population, in which case genetical factors may become dominant in the survival, or extinction of a population. |
 | | A "population bomb," as defined in the book, requires three things: a rapid rate of change; a limit of some sort; and delays in perceiving the limit. |
 | | The book's specific prediction that "in the 1970s and 1980s hundreds of millions of people will starve to death" did not come to pass, however, due for the most part to the efforts of Norman Borlaug's "Green Revolution" of the 1960s. |
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