Population ProblemsJ.B. Lippincott, 1937 - 508 σελίδες |
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Σελίδα 188
... limited ; no species reproduces for long at the maximum rate . [ Chief among a wide range of factors restricting fecundity are dis- eases which lower the natural fertility of the organism , and segregation , in the biological sense ...
... limited ; no species reproduces for long at the maximum rate . [ Chief among a wide range of factors restricting fecundity are dis- eases which lower the natural fertility of the organism , and segregation , in the biological sense ...
Σελίδα 199
... limited in size and this , in the absence of other fact , would set definite boundaries to the increase of numbers . The physical fact of limited space may and does set a limit to the increase of plant life . But in the case of the ...
... limited in size and this , in the absence of other fact , would set definite boundaries to the increase of numbers . The physical fact of limited space may and does set a limit to the increase of plant life . But in the case of the ...
Σελίδα 200
... limited to such animals and fish , and such roots , grains , and fruits as were edible in their natural state . In the absence of communica- tion and without transportation facilities , their place of resi- dence was rigidly restricted ...
... limited to such animals and fish , and such roots , grains , and fruits as were edible in their natural state . In the absence of communica- tion and without transportation facilities , their place of resi- dence was rigidly restricted ...
Περιεχόμενα
CHAPTER PAGE 1 PROBLEMS OF POPULATION | 1 |
THE HISTORIC GROWTH OF POPULATION | 26 |
THE GROWTH OF POPULATION IN THE UNITED STATES | 49 |
Πνευματικά δικαιώματα | |
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
American American Mercury appear average biological biologically determined birth control birth rate capacity celibacy census cent century chap cities civilization classes consequence contraceptive countries cultural death rate decade decline defective desire differences differential disease East North Central economic eugenic European excess existence fact factors family lines famine fecundity fertility genetic biology hereditary heredity human immigration increase in numbers individuals industrial infanticide inferior labor less limited living Malthus Malthusian marriage married means ment mental million native ability natural increase natural selection Negro nomic number of children offspring operate organization overpopulation percentage period persons physical popu POPULATION DENSITY population growth population number Population Problems population quality possible poverty practice present produce race racial rapid rates of increase relatively reproduction restricted result rural selective social society statistical status superior Sweden tion traits trend United urban various viduals welfare women