Examlex
To date, there have been no known birth defects associated with the mother's use of marijuana during pregnancy.
Empirically Tested
Examined or verified through observation and experimentation rather than through theory or pure logic.
Independent Variable
In an experiment, the variable that is manipulated or changed by the researcher to observe its effects on the dependent variable.
Nicotine
A stimulant and addictive substance found in tobacco products that impacts the central nervous system.
Real Cigarette
Refers to traditional tobacco cigarettes, as opposed to electronic cigarettes or other smoking alternatives.
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