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.
The two-factor theory of emotion says that there are two parts of emotion: the physiological symptoms and the cognitive thoughts that tell us what we're feeling. When we experience physical signs of emotion, such as a racing heart, we will look to cues in our environment to tell us what emotion we are feeling.