During the industrial revolution, change in production patterns ( caused by growth of new technology and machines) was resented by workers because the machines were a threat to their jobs

Afirefighter is a rescuer extensively trained in firefighting, primarily to extinguish hazardous fires that threaten life, property and the environment as well as to rescue people and animals from dangerous situations.  just cut some parts to make them shorter and add some of your facts or what describes them most. or what they are supposed to do.