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Competition Refresher
Competition Refresher Published this article page no 17 it took more than a million years for the human population to attain the one billion mark. but it took only 12 years for it to rise from 5 billion to 6 billion. see the table 2.1 carefully which shows that doubling time of world population is reducing fast. there is a great variation among regions in doubling their population. table 2.2 shows that developed countries are taking more time to double their population as compared to developing countries. most of the population growth is taking place in the developing world where population is exploding competition refresher magazine subscription.