5-1 Billons(1000 mson) WORLD POPULATION HIGH ESTIMATE ESTIMATE 752000 Undernourishment is conspicuous in the huge WORLD URBAN AND RURAL POPULATION urban slums of many third world cities, some of which have trebled in size in 20 years. But alnutrition is just as bad among the rura oor who have neither the resources nor the knowledge to feed their own families, quite apart from producing a surplus to feed the Source: Unsted Nat ons De1d Thatis living in towns of ower 20.000 peopie