The difference in writing between the two articles would most likely be in the purpose for writing.
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In the first article about the benefits of handwashing, the purpose may be primarily informative, aiming to educate readers on why handwashing is important for health and hygiene.
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In the second article that seeks to persuade readers to wash their hands more, the purpose would be more persuasive, aiming to convince readers to take action based on the information provided.
While tone and text organization can also differ between informative and persuasive writing, the core distinction between the two articles lies in their respective purposes.