8th Grade Science - "Types of Radiometric Dating" - P. 164; Chapter 6.3 Quiz

5th Grade Science - "How do Ecosystems Change Over Time?" - P. 186; "Endangered Animals" Worksheet

World Geography - "Economic Geography/Environmental Issues of Northern Eurasia" - P. 332

6th Grade Science - "Commensalism" - P. 170; "Symbiosis" Worksheet