1. Chapter 3 Opener

2. Figure 3.1 The current extent of tropical forests, and the areas that have been cleared of tropical forests

3. Figure 3.2 Coral reefs are built up from the skeletons of billions of tiny individual animals

4. Figure 3.3 Numbers of amphibian (A) and bird (B) species in S. A. are greatest just south of the Equator in western Amazon. (C) Certain areas are characterized by high species concentrations

5. Figure 3.3 Numbers of amphibian (A) and bird (B) species in S. A. are greatest just south of the Equator in western Amazon

6. Figure 3.3 (C) Certain areas are characterized by high species concentrations

7. Figure 3.4 Number of species of coral reef organisms, including fish, corals, snails, and crustaceans, found in different regions of the world

8. Figure 3.5 (A) Approximately 1.5 million species have been identified and described. (B) Estimates of described and undescribed species

9. Figure 3.5 (A) Approximately 1.5 million species have been identified and described

10. Figure 3.5 (B) Estimates of described and undescribed species

11. Figure 3.6 Researchers first encountered Laonastes aenigmamus being sold as a delicacy in Laos

12. Figure 3.7 (A) An entomologist checks sheet containing fallen insects and leaves. (B) An inflatable platform base is placed in the canopy

13. Box 3.1 Conserving a World Unknown: Hydrothermal Vents and Oil Plumes

14. Figure 3.8 (A) A researcher uses insecticidal fog to sample the insect species. (B) A researcher begins the process of sorting, describing, and identifying the insects

15. Figure 3.9 A new phylum, the Cycliophora, was first described in 1995