A cemetery in New England contains headstones from the seventeenth to the twenty-first centuries. Headstones from the seventeenth century are made of slate

Headstones from the mid-nineteenth century are made of marble. The information on the seventeenth-century headstone is clear and easy to read, whereas the nineteenth-century headstone is now illegible. Why? What weathering has occurred?What will be an ideal response?


Answer: The slate headstone will be more legible/resistant. Marble is a softer rock and much more prone to dissolution from slightly acidic rain.

Environmental & Atmospheric Sciences

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A) 0 B) -1 C) -2 D) -3

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Where are the deepest parts of the oceans?

A) in rift valleys at sea floor spreading center B) along the base of the continental slope C) in the abyssal plain D) in trenches

Environmental & Atmospheric Sciences

Which technique is used that attempts to match current conditions with similar well established patterns from the past?

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Environmental & Atmospheric Sciences