[CHAPTER 9 – Conventional Energy: Fossil Fuels] In West Virginia, coal reserves are expected to last for at least another _____ years.  

[CHAPTER 2 – Ecology ] Under what conditions might we see exponential population growth?

[CHAPTER 7 – Geological and Land Resources ] E-waste that can contain valuable metals and also toxic chemicals include _______

[CHAPTER 10 – Air Quality and Climate Change] Why are sea levels rising due to climate change?

[CHAPTER 8 – Food Resources] Research has shown that the main use of fossil fuels when growing crops is for _________

[CHAPTER 8 – Food Resources] Producing enough food to feed the world now and in the future will require ____

[CHAPTER 7 – Geological and Land Resources] More than _____% of green, photosynthesizing leaves are found in Earth’s forests.

[CHAPTER 11 – Alternatives to Fossil Fuels]  The mass number of an atom is the _______

[CHAPTER 11 – Alternatives to Fossil Fuels]  A general rule says that after _____half-lives, radioactive material has decayed enough to be rendered safe.

[CHAPTER 10 – Air Quality and Climate Change] The goal of the 2016 Paris Agreement is to keep climate warming well below which threshold?