| Chapter Introduction | friedlandapes2e_ch18_1.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_1_dlap.xml | 56e72750757a2ee10a000000 |
| module 59 The Sixth Mass Extinction
| friedlandapes2e_ch18_2.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_2_dlap.xml | 56e72750757a2ee10a000000 |
| module59REVIEW
| friedlandapes2e_ch18_3.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_3_dlap.xml | 56e72750757a2ee10a000000 |
| module 60 Causes of Declining Biodiversity
| friedlandapes2e_ch18_4.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_4_dlap.xml | 56e72750757a2ee10a000000 |
| module60REVIEW
| friedlandapes2e_ch18_5.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_5_dlap.xml | 56e72750757a2ee10a000000 |
| module 61 The Conservation of Biodiversity
| friedlandapes2e_ch18_6.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_6_dlap.xml | 56e72750757a2ee10a000000 |
| module61REVIEW
| friedlandapes2e_ch18_7.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_7_dlap.xml | 56e72750757a2ee10a000000 |
| [Unknown Title] | friedlandapes2e_ch18_8.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_8_dlap.xml | 56e72750757a2ee10a000000 |
| Chapter 18 Review
| friedlandapes2e_ch18_9.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_9_dlap.xml | 56e72750757a2ee10a000000 |
| Chapter 18 AP® Environmental Science Practice Exam
| friedlandapes2e_ch18_10.html | 56e72750757a2ee10a000000 |
| DLAP questions | friedlandapes2e_ch18_10_dlap.xml | 56e72750757a2ee10a000000 |