(Print) Use this randomly generated list as your call list when playing the game. There is no need to say the BINGO column name. 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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uniformitarianism
key bed
original horizontality
inclusions
geologist
relative age
fault
lateral continuity
absolute age
index fossils
cross-cutting
oldest layer
large number of species disapear from a time period
extinctions