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Why is it in a country's best national security interests to invest in sustainable energy sources?
Abnormality
A deviation from the norm that may signal the presence of a disorder, disease, or undesirable condition.
Trephination
An ancient operation in which a stone instrument was used to cut away a circular section of the skull, perhaps to treat abnormal behavior.
Stone Instrument
A tool made of stone, typically used in historical or prehistoric contexts for various purposes, such as cutting, pounding, or as part of a ritual.
Skull
The bony structure forming the head, protecting the brain and supporting the structures of the face.
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