(Print) Use this randomly generated list as your call list when playing the game. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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O-Wide Continental Shelf
B-Rift
N-They float on the upper mantle
N-Shear Boundary
B-Southern Hemisphere
N-Granite
G-Mid-Ocean Ridges
I-Mantle
B-Shelf Break
G-Panthalassa
I-Seamount
O-Crust
I-Subduction
B-Continental Drift
G-Antarctic Ocean
B-One plate sinks beneath another
N-Hydrothermal Vent
G-Lithogenous Sediment
O-Basalt
G-Big Bang
O-Carbon Dating
B-71%
I-Fault
I-Gradual Continental Shelf
O-Outer Core
G-Magnetic anomalies, sea-floor spreading, and mid-ocean ridges