1. Ecosystems, Day Two Ms. Clodfelter 8 th grade science

2. Review Question One Which term BEST describes a tick on a deer? a.Decomposer b.Contagion c.Parasite d.Vector

3. Answer c. parasite

4. Review Question Two How would populations most likely be affected if a water supply for an ecosystem dries up? a.They would find another source of water b.They would not be affected negatively c.They would die due to lack of water

5. Answer

6. Review Question Three How does lack of oxygen impact the formation of fossil fuels from organic debris? a.It allows the formation of fossil fuels to occur by preventing complete decomposition of organic debris b.It allows the formation of fossil fuels to occur by reducing chemical reactivity of organic debris c.It prevents the formation of fossil fuels from occurring by restricting increases in chemical energy d.It prevents the formation of fossil fuels from occurring by keeping materials from sorting by mass

7. Answer a. It allows the formation of fossil fuels to occur by preventing complete decomposition of organic debris

8. Owl Pellet Dissection Lab Characteristics of Owls- Raptors, Predation https://www.youtube.com/watch?v=ohqEquNnzfU

9. Let’s take a closer look on how those pellets are made… https://www.youtube.com/watch?v=_PfjN2ZSmdA

10. Lab Expectations Stay in your seat Stay in your seat Read the directions Read the directions No horseplay No horseplay

11. Other procedures Dissect the pellet by taking in apart. Use forceps and toothpicks to help with this. Dissect the pellet by taking in apart. Use forceps and toothpicks to help with this. Take apart the pellet, separate fur from bones and reconstruct skeleton to see what the owl ate Take apart the pellet, separate fur from bones and reconstruct skeleton to see what the owl ate Glue lab sheet in your science notebook Glue lab sheet in your science notebook

12. Post Lab Work on reflections for the even numbered page Work on reflections for the even numbered page Questions to ponder- What would happen if a local mouse population decreased/increased? Questions to ponder- What would happen if a local mouse population decreased/increased? What would happen if a farmer used rat poison? What would happen if a farmer used rat poison? What are major factors affecting the well-being of owl populations and their ecosystems What are major factors affecting the well-being of owl populations and their ecosystems

13. Questions/Wrap Up