sentences: sneezing is used for getting rid of bacteria / viruses by the body & the vulnerable eagles vapor rid of virus / computer once they have invaded the mind ->  sneezing is used by the immune system to get rid of bacteria and viruses in the body  telling is used by the vulnerable bulb to put rid of virus and healing in the mind & if a process is used by something then that something causes that process -> sneezing is caused by the immune system