HW1 - CE11 HW 1 Eddie Lo 19483002 1. Exponential Growth A)...

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CE11 HW 1 Eddie Lo 19483002 1. Exponential Growth A) World's population in 2025: P_0(tot)= 6 bil P_0(tot)=P_0(ind)+P_0(dev) P_0(ind)= 1.3 bil P_0(dev)= 4.7 bil r(tot)= 0.01 r(tot)=r(ind)+r(dev) r(ind)= 0 r(dev)= 0.02 t= 25 years P(tot)= P(ind)+P(dev) 1.4 + 7.01 8.41 bil B) Percent of the increase in developing countries: 95.8 C) Percentage of people lived/will live in developing countries in 2000 78.33 % in 2000 2025 83.34 % in 2025 2. Population rate Region Population Average annual % of the pop (Thousands) population change, r (%) living in a reg 2000 2025 World 6,055,049 7,823,703 1.7 1.3 0.01 ------------ Industrialized countries 1,306,083 1,359,258 0.6 0.3 0.00 21.57% Developing countries 4,746,022 6,459,163 2.1 1.6 0.01 78.38% Regions Asia 3,420,234 4,307,665 2.1 1.6 0.01 56.49% Europe 728,416 701,734 0.5 0 0.00 12.03% 403,793 613,894 2.6 1.8 0.02 6.67% Sub-saharan Africa 640,663 1,095,448 2.8 2.4 0.02 10.58% N. America 309,504 363,469 0.9 0.8 0.01 5.11% 173,292 235,662 2.7 1.6 0.01 2.86% 1975- 1980 1995- 2000 2000- 2025 % living, 2000
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S. America 345,779 460,864 2.3 1.5 0.01 5.71% Oceania 30,424 39,686 1.1 1.3 0.01 0.50% PART A: To calculate the rates in where P= population in 2025 2000-2025, we use the P_0 = population in 2000 exponential growth formula: t = 25 years There are some differences in the growth rates from 2000-20025 as compared to the rates seen in 1975-1980 and 1995-2000. None of the growth rates from 2000-2025 are greater than one, and in most cases they are 0 or near 0% growh. This suggests the population will grow slower between 2000-2025, if we use the exponential growth model to calculate the average annual growh rates. PART B: To calculate the percentage of people living in each region in 2000 and 2025, we divide the region's population by the world population and multiply by 100%. (see table on previous pa For example, for the percent of the population living in Oceania in 2000, we calculate 30424/6055049*100%=0.50%
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This note was uploaded on 05/08/2011 for the course CE 11 taught by Professor Horvath during the Spring '11 term at University of California, Berkeley.

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HW1 - CE11 HW 1 Eddie Lo 19483002 1. Exponential Growth A)...

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