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If no elements are in the Stack,method pop throws an __________.
Natural Resources
Materials or substances occurring in nature which can be exploited for economic gain, including water, minerals, forests, and fossil fuels.
Worker Productivity
The measure of the output of goods or services produced by an employee within a given time frame.
Worker Preferences
The desires or priorities of employees regarding their job conditions, salary, environment, and other job-related factors.
Earning Differentials
The differences in wages or earnings among workers due to various factors such as education, experience, and skills.
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