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Rate Of Growth Puts: One undersized boy felt much better when the school physician explained that the X-ray pictures of his wrist bones showed that he had not yet reached his nhysical maturity and that he would undoubtedly grow taller. Rapid acceleration in the rate of growth puts an additional strain on the vital organs and requires protection against overexertion. Uneven growth may create problems of awkwardness and self-consciousness. Inappropriate growth, as in the case of the boy who develops feminine contours, presents still more serious problems of adjustment.
Perhaps more significant than the actual size of the population is the rate of growth and the ratio of people to arable land. The rate of growth is estimated at about 2.2% per annum. Although this rate is not among the world's lighest, if such a relatively moderate rate is ipplied to the large base population, the annual jrowth exceeds 15 million people. Also, when Jie total land area of China is considered, the lumber of people per square mile is about 160 (414 per sq km), a rather low density.
The growth of the British economy—measured conventionally as the compound annual rate of growth of the gross national product per head-has averaged since 1950 about 2.5%, or about one half the rates of other industrialized economies. Productivity in manufacturing has grown at a slightly higher rate than in the service sector, and in some sectors of manufacturing (chemicals and motors, for example) much faster than in others (textile and food industries).
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