I would say that in order to correctly proofread the sentence and fix the error, you need to delete the word writing.
Journals are an effective tool for developing new essay topics.
There shouldn't be a comma after tool. If you change are to is, it is incorrect, because it is said <em>journal writing, </em>not <em>journals writing. </em>Developing is spelled correctly already.
An interrogative pronoun is a questioning pronoun, used when asking. For instance the five W's - who, what, where, when, why.
In this sentence - How could that be you moron? - the interrogative pronoun is 'How'.
The answer to your question is situational.
Hoped I Helped!
The correct answer should be flowing water
Grass prevents erosion and dams prevent water from flowing.