Answer:unconditioned stimuli
Pavlov fed dogs and was looking at salivation in response to the food.
At a certain point, whenever he entered the
room, the dog would start to salivate even when he was not bringing them
food. The exact same happened to Dionne when she saw the chili peppers even though it was just a picture and not the real thing.
This it is an unconditioned response to an unconditioned
stimulus.
<h2>O facial expressions</h2><h3>When you cry, you show emotions through your face. you are crying, and you're sad. Facial expressions show motions of the face that indicate feelings and emotions. So, the answer is facial expression.</h3>
Loss of sleep is a possible sign and effect of stress.
This statement is true. Anxiety and depression are also common signs of stress.
I hope it helps, Regards.
