Examlex
Which of the following has its primary affect on the brain's pain receptors?
Strip Mines
Large, open-pit mines where layers of soil and rock are removed to access underlying minerals.
Underground Machines
No definitive context, but likely refers to equipment used for underground operations such as mining or tunnel construction.
Oil Shale
A fine-grained sedimentary rock containing organic materials that can be processed to produce shale oil, a type of unconventional oil.
Rocky Mountains
A major mountain range in western North America, extending from Canada through the United States.
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