Essentials of Ecology

S16 SUPPLEMENT 3

0.4–10 11–100 101–200 201–1,0001,001–25,100 No data

Figure 11 Population density per square kilometer in 2007. (Data from
Population Reference Bureau and United Nations Population Division)

Data and Map Analysis

1. What is the country with the densest population? (See Figure 1 on
   pp. S10–S11 for country and continent names.)


2. List the continents in order from the most densely populated, overall,
   to the least densely populated, overall.

Urban population

(billions)

1950 1960 1970 1980 1990 2000 2010 2020

Developing

countries

World

Developed

countries

Year

2030

0

1

2

3

4

5

Figure 12 Urban population totals and projections for the world,

for developing countries, and for developed countries, 1950–2007

with projections to 2030 (Data from United Nations Population

Division)

Data and Graph Analysis

1. In about what year did the urban population in developing coun-
   tries surpass the urban population in developed countries? In
   about what year was the former twice that of the latter?


2. About how many people will be living in urban areas in develop-
   ing countries in 2030? In 2030, about how many people will be
   living in a developing country urban area for every person living in
   a developed country urban area?