Women, white in USA, 1939-1941 B Women in India 1921-1930 Theore tical population with haif-life of 10 yr Curve A shows a white woman's life expectancy in the USA. Curve B shows an Indian woman's life expectancy in India. Curve C shows fish's life which has an equal chance of dying at any age. Curve D shows an oyster's life in which there are many young but few survive to adulthood. % Survivors

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