Essentials of Ecology

S14 SUPPLEMENT 3

Figure 8 Total fertility rate (TFR), or average number of children born to the
world’s women throughout their lifetimes, as measured in 2007. (Data from
Population Reference Bureau and United Nations Population Division)

Data and Map Analysis

1. Which country in the highest TFR category borders two countries in the
   lowest TFR category? What are those two countries? (See Figure 1 on
   pp. S10–S11.)


2. Describe two geographic patterns that you see on this map.

1.1–1.9 2.0–2.9 3.0–3.9 4.0–5.9 6.0–8.1

Figure 7 Total fertility rate for the world, developed regions, and

less developed regions, 1950–2007, with projection to 2050 (based

on medium population projections). (Data from U.N. Population

Division)

Data and Graph Analysis

1. What are two conclusions you can draw from comparing these
   curves?


2. In 2010, about how many more children will be born to each
   woman in the developing regions than will be born to each
   woman in the developed regions?

1

2

3

4

Total fertility rate

(children per woman)

5

6

7

8

1955 1970

Developing

countries

World

Developed

countries

1990 2010

Year

2030 2050