Population Update World population, now in excess of 6 billion persons, is augmented by 3 persons per second. (In each 2-second period, 9 babies are born, but only 3 persons die.) The annual growth rate was estimated in the 1990s at 1.7%.
(a) Does this agree with the world population predictions by the United Nations in 2004? See Table 1.1.2, and set t = 0 in the year 2000. Explain fully.
(b) Calculate the appropriate annual growth rate for each 10-year period given in Table 1.1.2.
Table 1.1.2
Year | 2004 Prediction |
2000 | 6,056,000,000 |
2010 | 6,843,000,000 |
2020 | 7,578,000,000 |
2030 | 8,199,000,000 |
Source: www.un.org/popiny
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