Peak Oil
The point of maximum global oil production, theoretically occurring when approximately half of recoverable reserves have been extracted.
Real World
US shale oil production delayed widely predicted peak oil timelines — production surged from 5 million to 13 million barrels per day between 2008 and 2019, illustrating how technology can reshape resource availability.
Exam Focus
Clarify that peak oil refers to the production rate, not total reserves — misdefining this is a common error that costs marks in 'explain' questions.
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