Answer:
1.Radio waves are used for communication such as television and radio.Radio waves are transmitted easily through air. They do not cause damage if absorbed by the human body, and they can be reflected to change their direction. These properties make them ideal for communications.
2.Extrinsic,Intrinsic,Low-level exposure
3.The killing and destructive power of electromagnetic radiation can be used constructively for curing the incurable diseases by eradicating the disease producing pathogens and micro organisms like bacteria, virus & fungi.
Explanation:
sana po makatulong yan lang po nakaya ihhh
