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A(n)____________________, like the one pictured above, remained in use as an essential tool for students, engineers, and scientists through the 1960s.
Q11: Almost every natural place on earth has
Q31: Biodiversity is generally higher in the _
Q35: Transistors sparked a revolution in the entertainment
Q53: Forests, both natural and planted, occupy how
Q55: According to the World Resources Institute, if
Q65: Research by social scientists suggests that it
Q71: Sam was recently employed as the technology
Q71: Humans add sulfur to the atmosphere primarily
Q73: Removing intermediate-aged or mature trees from a
Q83: The mass number of an atom is