How do you know if an online journal is a true journal of scholarly papers, rather than a popular article or a fraudulent article?
The look and feel of a scholarly article is different from an article, even a long article, in a popular or entertainment journal. Most scholarly papers in the sciences have more than one author, sometimes many more. The page design is distinctive, and usually the blocks of texts contain many citations, which popular articles do not.
Note the difference between the look and feel of the two articles pictured below. Can you guess which is the scholarly article?