How could sleep deprivation cause a serious health problem if it is not addressed?

The authors use the word “backbone” in lines 3 and 39 to indicate that

Which best describes standard precautions?

In her article "why should i vote? " stephanie goggin crafts a well-organized and coherent argument. she states that every person of voting age who is registered should vote. she also argues that if you are not registered to vote, you should be. in conclusion, goggin's argument is laid out in a thoughtful and thorough way that is convincing to readers. which element is missing from this evaluation?