Pollution may be caused by natural sources or human activities, but regardless of the cause, the result is the same. It can have detrimental effects on aquatic ecosystems as well as the health of those who depend on those sources of water, like us!
review verb (THINK AGAIN) C1 [ T ] to think or talk about something again, in order to make changes to it or to make a decision about it: The committee is reviewing the current arrangement/situation. Let's review what has happened so far.
A critical review of a journal article is an evaluation of an article's strengths, weaknesses and validity. It is used to inform readers of an article's value through explanation, interpretation and analysis. The reviewer must present information that will allow the reader to make a value judgment about the article.