1 .		Which one of the following is not a geologic era?
2 .		Which of the following is used to assess the hardness of a rock?
3 .		The category “Violent Weather Phenomena” does not include which of the following:
4 .		Which of the following is not contained in the Attention Getter lesson plans?
Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.