Population pyramid indicates ?

Ans. is 'd' i.e., All of the above Population pyramid The age and sex distribution of a population is best represented by population pyramid In countries with high bih rates as ours, it is broad based conical pyramid because of high bih rate and tapering of population with increase in age. In developed countries with low bih rate, the pyramid swells in the middle and is narrow at the base and is not so conical at the top. (dumb bell shaped). Utility of population pyramid Shape of population pyramid indicates feility pattern Broad base, Narrow top (upright triangle): High propoion of younger population (developing countries) Bulge in Middle: High propoion of adults (developed countries) Span (height) of population pyramid indicates life expectancy Taller pyramid: Higher life expectancy (developed countries) Shoer pyramid: Lower life expectancy (developing countries) Symmetry of population pyramid indicates sex ratio Symmetric pyramid: ideal sex ratio ( developed countries) Asymmetric pyramid: unourable sex ratio <1000 (developing countries)