[CHAPTER 10 – Air Quality and Climate Change] Why are particles smaller than 2.5 µm the most dangerous?

[CHAPTER 10 – Air Quality and Climate Change] Which of these can be used by scientists to estimate past climates?

[CHAPTER 9 – Conventional Energy: Fossil Fuels] How do oil and natural gas occur in formations?

[CHAPTER 10 – Air Quality and Climate Change] How does climate change affect alligators?

[CHAPTER 11 – Alternatives to Fossil Fuels]  The EPA considers which type of energy to be one of the most efficient heating and cooling systems?

[CHAPTER 10 – Air Quality and Climate Change] One of the first environmental laws passed in the United States to regulate pollution was the ___________

[CHAPTER 9 – Conventional Energy: Fossil Fuels] Where are the largest conventional oil and natural gas reserves in the world found?

[CHAPTER 9 – Conventional Energy: Fossil Fuels]  In subsurface mines, more miners die of ___________

[CHAPTER 7 – Geological and Land Resources] To maintain the genetic quality of the forest, where new growth is of high quality and well adapted to the area, which harvesting technique would be the most effective?

[CHAPTER 9 – Conventional Energy: Fossil Fuels] Which of the following does NOT have environmental costs associated with it?