An advertisement on the radio warning the public against the dangers of smoking is called a a.. public service declaration. b.. public health message. c.. public service announcement. d.. public health initiative.

Ican only answer your first question, a machine is like a human body because it's a little similar. they both almost work like the same.

Some of their responsibilities are to evaluate safety, efficiency, and effectiveness of the biomedical equipment. train people on how to properly operate biomedical equipment. lastly is to research the engineering aspects of the biological systems of humans and animals.