The parts of the brain where addiction arises are A. the suprachiasmatic nuclei, the ventricles, and the cerebral cortex. B. the nucleus accumbens, the ventral tegmental area, and the prefrontal cortex. C. the frontal medulla, the cerebellum, and the hypothalamus. D. the optic nerve, auditory nerve, and stapes. E. the presynaptic neuron, postsynaptic neuron, and synapse.

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Which would be the most useful source of evidence to support mcneill's contention?

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?