Essentials of Ecology

S18 SUPPLEMENT 3

<0.1%

Adult prevalence rate

0.1– <0.5%

0.5– <1.0%

1.0– <5.0%

5.0– <15.0%

15.0–34.0%

Data not included

(^)
Figure 14 Percentage of adults infected with HIV in 2005. (Data from the
World Health Organization)
Data and Map Analysis

1. How many countries have an adult HIV prevalence rate of 5% or higher?
   List ten of these countries. (See Figure 1 on pp. S10–S11 for country and
   continent names.)


2. Find an instance where a country with a high rate of HIV prevalence bor-
   ders a country or countries with a low rate. List the countries involved.

Total municipal solid waste

(million tons per year)

(kilograms/person/day)Per capita generation

1960 1970 1980 1990 2000 2003 2004 2005

Year

Total

Per capita

1.0

1.5

2.0

2.5

50

100

150

200

Figure 15 Total and per capita production of municipal solid waste 250

in the United States, 1960–2005. (Data from the U.S. Environmental

Protection Agency)

Data and Graph Analysis

1. How much more municipal solid waste was generated in 2005
   than in 1960, in millions of tons?


2. In what year did per capita solid waste generation reach a level
   four times as high as it was in 1960?