The main idea of this paragraph is that the rocks cannot be explained by science, that there is a mystery to them. This sentence contributes to that idea because it gives a specific example of one of the odd things about the rocks. Because they are on a flat surface they should not roll or move on their own, but the fact that they have a trail behind them shows that they have somehow moved. This supporting statement is then supported by more details about the trails.
<span>Carrara (Luna) marble from Tuscany
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a. Spending a considerable amount of time doing repetitive tasks with a person's hands can lead to carpal tunnel syndrome (Ionta 38).
This is the correct parenthetical citation. There are no signal words in the sentence that indicate the author of the cited passage. Therefore, the author needs to be included in the parenthetical citation. Also, needed in the parenthetical citation is the location where the information was found. This information was found on page 38. The author's name comes before the page number because the author's name is what will be used first when determining the source of the information. The reader would look for the author in the Works Cited page, then need to acquire the source before turning to page 38. It's also important that the parenthetical information be inside the period with the rest of the cited information. This connects everything together.
C. Human vanity and it's destruction over time
