Please help me write an essay over fear.?

Fear is actually a biological response to the minds perception of danger based on external stimulation. When something "frightening" happens, the stimuli activates the central nervous system causing several different reactions for different people. Most people are familiar with "fight of flight" but fear can also activate a paralysis response. I forget the actual chemical processes involved as it has been a few years since I studied human biology and physiology, but you can look it up in any physiology book. It is also possible, though not probable, to be scared to death due to the amounts of chemicals released during a fear response. It's actually a fascinating topic.