5 Populations 128
What factors contribute to changes in populations?
5.1 How Populations Grow 130
5.2 Limits to Growth 137
5.3 Human Population Growth 142
A Plague of Rabbits
6 Humans in the Biosphere 152
How have human activities shaped local and global ecology?
6.1 A Changing Landscape 154
6.2 Using Resources Wisely 158
6.3 Biodiversity 166
6.4 Meeting Ecological Challenges 173
Moving the Moai
Unit 2 Project 186
UNIT 3 Cells 187–304
7 Cell Structure and Function 188
How are cell structures adapted to their functions?
7.1 Life Is Cellular 190
7.2 Cell Structure 196
7.3 Cell Transport 208
7.4 Homeostasis and Cells 214
Death by…Water?
8 Photosynthesis 224
How do plants and other organisms capture energy from the sun?
8.1 Energy and Life 226
8.2 Photosynthesis: An Overview 230
8.3 The Process of Photosynthesis 235
Out of Thin Air?
9 Cellular Respiration and Fermentation 248
How do organisms obtain energy?
9.1 Cellular Respiration: An Overview 250
9.2 The Process of Cellular Respiration 254
9.3 Fermentation 262
Diving Without a Breath