PART 1   The Facts of Life

1 Scientific Thinking | Your best pathway to understanding the world

1

2 Chemistry | Raw materials and fuel for our bodies

39

3 Cells | The smallest part of you

85

4 Energy | From the sun to you in just two steps

135

PART 2   Genetics, Evolution, and Behavior

5 DNA, Gene Expression, and Biotechnology | What is the genetic code, and how is it harnessed?

177

6 Chromosomes and Cell Division | Continuity and variety

231

7 Genes and Inheritance | Family resemblance: how traits are inherited

277

8 Evolution and Natural Selection | Darwin’s dangerous idea

315

9 Evolution and Behavior | Communication, cooperation, and conflict in the animal world

365

PART 3   Evolution and the Diversity of Life

10 The Origin and Diversification of Life on Earth | Understanding biodiversity

405

11 Animal Diversification | Visibility in motion

445

12 Plant and Fungi Diversification | Where did all the plants and fungi come from?

493

13 Evolution and Diversity Among the Microbes | Bacteria, archaea, protists, and viruses:the unseen world

533

PART 4   Ecology and the Environment

14 Population Ecology | Planet at capacity: patterns of population growth

571

15 Ecosystems and Communities | Organisms and their environments

609

16 Conservation and Biodiversity | Human influences on the environment

649

PART 5   Plant Life

17 Plant Structure and Nutrient Transport | How plants function, and why we need them

687

18 Growth and Reproduction in Plants | Problem solving with flowers and wood

725

19 Plants Respond to Their Environments | Defending and regulating while rooted in the ground

763

PART 6   Health and Physiology

20 Introduction to Animal Physiology | Principles of animal organization and function

791

21 Circulation and Respiration | Transporting fuel, raw materials, and gases into, out of,and around the body

827

22 Nutrition and Digestion | At rest and at play: optimizing human physiological functioning

873

23 Nervous and Motor Systems |Actions, reactions, sensations, and addictions:meet your nervous system

917

24 Hormones | Mood, emotions, growth, and more: hormones as master regulators

969

25 Reproduction and Development | From two parents to one embryo to one baby

1003

26 Immunity and Health | How the body defends and maintains itself

1045