Sort the situations described according to which type of reference work would be MOST helpful and convenient. Only one choice fits in each category.


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You are concerned about global warming and want to learn what why society is concerned about it.You're writing a poem and need a word that means the same as blue. You come across the word "ubiquitous" in your reading and want to know what it means.You're doing your science homework out of the textbook on the bus and need to refresh your memory about the meaning of mitosis.

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