x
6-3 How Does a Population’s Age Structure
Affect Its Growth or Decline? 130
6-4 How Can We Slow Human Population
Growth? 133
CASE STUDY Slowing Population Growth in China:
The One-Child Policy 135
CASE STUDY Slowing Population Growth
in India 136
REVISITING Population Growth and
Sustainability 1377 Climate and Terrestrial
Biodiversity 140
CORE CASE STUDY Blowing in the Wind:
Connections Between Wind, Climate,
and Biomes 140
KEY QUESTIONS AND CONCEPTS 141
7-1 What Factors Influence Climate? 141
7-2 How Does Climate Affect the Nature
and Locations of Biomes? 145
SCIENCE FOCUS Staying Alive in the Desert 148
7-3 How Have We Affected the World’s
Terrestrial Ecosystems? 158
REVISITING Winds and Sustainability 1598 Aquatic Biodiversity 162
CORE CASE STUDY Why Should We Care
about Coral Reefs? 162
KEY QUESTIONS AND CONCEPTS 163
8-1 What Is the General Nature of Aquatic
Systems? 163
8-2 Why Are Marine Aquatic Systems
Important? 165
8-3 How Have Human Activities Affected
Marine Ecosystems? 171
CASE STUDY The Chesapeake Bay—An Estuary
in Trouble 172
8-4 Why Are Freshwater Ecosystems
Important? 174
CASE STUDY Dams, Deltas, Wetlands, Hurricanes,
and New Orleans 177Photo 6 Flexible solar cells manufactured with use of
nanotechnologyNanosysPhoto 7 Cypress swamp, an inland wetland in U.S. state
of TennesseeFrancois Suchel/Peter Arnold, Inc.Photo 8 Treadle pump used to supply irrigation water in parts of
Bangladesh and IndiaInternational Development Enterprises