Original sentence: Newspapers generally adhere to an expository writing mode and style, but over time and place journalism ethics and standards have varied in the degree of objectivity and sensationalism incorporated.There are debated definitions of professionalism among  particular news agencies, and their reputability or public value, according to professional standards of idealism and depending on what the reader wants from a news story, may be tied to their appearance of objectivity
Edited sentence: There are debated degrees of professionalism among  particular news agencies,.While newspapers, like encyclopedias, generally adhere to an expository writing mode and style, this has changed over time as journalism ethics and standards have (debatably) increased to become more objective and less sensationalistic.and their reputability or public value, according to professional standards of idealism and depending on what the reader wants from a news story, may be tied to their ability to be objective