This text was taken from a university website.  The original can be found here.  It is clear this passage needs be be revised.

I copied this text into a Microsoft Word document and did an analysis of it as I prepared to make my editorial improvements.  See that analysis and those notes below.

Using my analysis and notes to guide me, I revised the passage.  Compare my revision to the original text at the top of the page.  If you like my work, contact me.