|In the study group's junior year at Greendale Community College they all agree to take the subject Biology together. The textbook required for the course is "Biology: Principles and Perspectives" published by Kendall/Hunt. Its first appearance was in the Season Three episode "Biology 101" and its last appearance was in the season finale "Introduction to Finality".|
"Competitive Ecology": The Study Group are all seen with the textbook when they fail the terrarium assignment.
"Introduction to Finality": Jeff is seen multiple times with the textbook trying to study for the final exam.
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