Class A Fires consist of ordinary combustibles such as wood, paper, trash or anything else that leaves an ash. Water works best to extinguish a Class A fire. Class B Fires are fueled by flammable or combustible liquids, which include oil, gasoline, and other similar materials.
The amygdala is involved in our experience of emotion and in tying emotional meaning to our memories. The hypothalamus regulates a number of homeostatic processes, including the regulation of body temperature, appetite, and blood pressure.
Plutchik believed that the purpose of emotions was to create an interaction between the individual and the stimulus (an event or person) in such a way that the emotion could be resolved to bring the person back to equilibrium. Therefore, a person sees a bear. They are afraid.