What’s in common and what are the differences among different parts of the EM spectrum?Which part do wifi, cellphone, or microwave radiation belong to? Are they harmful to human body? If yes, what makes them harmful? If no, explain. What evidence do you have to support your claim/hypothesis?

Does wifi, cellphone or microwave radiation affect our health? and Why?

In this paper, you are also required to give a clear introduction to Electromagnetic Waves (EM waves), including:

Different parts of the EM spectrum

What’s in common and what are the differences among different parts of the EM spectrum?

What makes them harmful or not harmful to human body?

Which part do wifi, cellphone, or microwave radiation belong to? Are they harmful to human body? If yes, what makes them harmful? If no, explain. What evidence do you have to support your claim/hypothesis?