catastrophic – adj. causing a lot of suffering or destruction

concentrator – n. a device to reduce the size of a substance and make it stronger

challenge – n. a difficult task or problem

transformer – n. a device that changes the characteristics of an electrical current

definitely – adv. without any question or doubt

ventilator – n. a machine that helps a person breathe

engage – v. to become involved in, or have contact with, someone or something

impact – n. a powerful effect something has on a person or situation