Examlex
Which of the following polymerization processes best describes formation of polyurethanes?
Happy Face
An expression on a person's face that indicates joy, happiness, or amusement.
Physiological Arousal
The body's physical response to stimuli, involving increased heart rate, blood pressure, and energy levels, often as part of the fight or flight response.
Basic Emotions
Fundamental emotions that are universally expressed and recognized across human cultures, such as happiness, sadness, fear, disgust, anger, and surprise.
Facial Expressions
Visible changes in the facial muscles that convey an individual's emotional state to others.
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