The older you get the less your body and mind is able to deal with stress and work
Salmonella - A. food inspection
Whooping Cough - C. vaccination
HIV - B. education
Answer:
It can cause gene mutations, or can be carcinogenic
By putting protective garment against the radiation like lead
It shouldn't be phased out, its advantage outweigh its challenges and with time the solution to the challenges will be discovered.
Explanation: