Opinion Essay- Academic Voice in Writing

Opinion essay  

  Answer both questions:  Use APA formatting 450 -500 words.
1) Why is it important to use an academic voice rather than a conversational voice in research papers.
2) What constitutes plagiarism and why is it considered the felony of academic writing?

Use APA 7 formatting.  
Please use at least one reference (can be the text book or some other reference).