Notes

Chapter 3: Natural Ecosystems and Stewardship
Unit B: Sustainable Ecosystems
4. [3.3][T] Point out patterns that exist in species richness on Earth. Explain why these patterns exist. Describe
possible exceptions to these patterns.

7. [3.3][K] Create a flow chart of the categories that species at risk move through from normal populations to extinction.
9. [3.4][C] Describe the factors regarding the sustainability of fragmented habitats in the drawing shown below.
10. [3.5][C] Summarize why introducing non-native species can be detrimental to an existing ecosystem.
11. [3.5][C] Describe the various methods that can be used to help control the growth of invasive species. Which method
would you prefer to use in your own garden, nearby park, or community?
12. [3.5][T] One method of controlling invasive species is using biological methods. Explain why this method
has dangers of its own.
13. [3.6][C] You have learned about the impacts that acid rain has on various ecosystems or organisms.
Describe some of these impacts.
14. [3.6][T] Why might the bureau in charge of tourism benefit from acid pollution?
15. [3.6][A] Compare and contrast the past philosophy of dealing with air pollution with the current philosophy.
16. [3.6][C] After an oil spill on water, summarize the advantages and disadvantages of burning the oil.
17. [3.6][T] What have you learned about the methods that can be used to clean up an oil spill on water? Discuss
some of the advantages and disadvantages of each.
18. [3.7][C] Describe the various methods of forestry that you have learned about. Briefly summarize each method.
19. [3.7][A] Defend the clear-cutting method of forestry.
20. [3.7][T] Analyze how biodiversity may be reduced when artificial regeneration is used after clear-cutting.
21. [3.7][T] How can supply and demand affect our natural resources and ecosystems?
22. [3.7][T] What effect might hunting/fishing licenses have on an ecosystem?
26. [3.6][T] How does the population density probably relate to the amount of acid rain in that region? Justify.
30. [3.2][T] Analyze how a volcanic eruption can cause primary succession.
31. [3.2][T] Decide if it is possible for an ecosystem to continue on indefinitely without succession. Justify.
32. [3.2][C] Use what you have learned in this chapter to describe the natural progression of succession in an
ecosystem that is familiar to you.
33. [3.2][T] If succession is initiated by a drastic event, like a fire, but the environment remains the same, what
will the new succession of communities likely look like? Justify your reasoning.
34. [3.7][T] Why are fossil fuels considered to be non-renewable resources?
35. [3.6][A] What have you learned about the ecological impact that plastics have on marine ecosystems?
36. [3.7][C] Describe why garbage has become an increasingly significant problem in the last 100 years.
37. [3.3][C] Describe some natural reasons why a species might face extirpation or extinction.