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

Along with this document, there are 5 research papers included in the Final Project folder on Blackboard that you are required to read and refer to when writing your own research paper. More specifically, these 5 research papers should serve the following purposes as you prepare, draft and edit your final research paper:
As your literature review sources. “A literature review surveys books, scholarly articles, and any other sources relevant to a particular issue, area of research, or theory, and by so doing, provides a description, summary, and critical evaluation of these works in relation to the research problem being investigated. Literature reviews are designed to provide an overview of sources you have explored while researching a particular topic and to demonstrate to your readers how your research fits within a larger field of study.” (https://libguides.usc.edu/writingguide/literaturereview)
As templates or sample papers as you write your own;
As your references (you can read more research papers and list them as your references besides these 5 given, but not less).

NOTE that we have 0 tolerance for plagiarism in this course. You may cite the papers but are not allowed to copy and paste sentences or paragraphs into your own paper.

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, please explain. What evidence do you have to support your claim/hypothesis?