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Of the following effects of caffeine, which one has not been proven through scientific studies?
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.
Q13: Identify the themes and interests that unify
Q15: Osteoporosis is a serious health threat to
Q16: Decreasing brain size is a trend in
Q16: Heavy uses of alcohol increases blood concentrations
Q21: _ do not have tails.<br>A)New World monkeys<br>B)Monkeys<br>C)Apes<br>D)Lemurs<br>E)Tarsiers
Q25: Hormone replacement therapy increases the risk of
Q35: _ is a cultural universal.<br>A)Hypodescent<br>B)Hyperdescent<br>C)Bifurcate merging kinship
Q37: Fertilization of the ovum usually occurs in
Q42: Women reportedly have lower body satisfaction than
Q43: Risk factors for multiple sclerosis include all