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How many presidents have been unmarried while serving as president?
Cocaine
A powerful stimulant drug derived from the leaves of the coca plant, known for its addictive properties and illegal status in many countries.
Limbic System
A complex system of nerves and networks in the brain, involved in instinct and mood. It controls the basic emotions (fear, pleasure, anger) and drives (hunger, sex, dominance, care of offspring).
Dopamine
Dopamine is a neurotransmitter that plays a key role in the brain's reward system, influencing mood, motivation, and pleasurable sensations, along with various physical processes.
Serotonin
A neurotransmitter in the brain that plays a critical role in regulating mood, anxiety, and happiness.
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