Rare in crustal rocks, but abundant in some meteoroids, the presence of a(n) ____________________ layer provides evidence for a meteorite impact at the end of the Mesozoic.

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The Answer of Rare in crustal rocks, but abundant in some meteoroids, the presence of a(n) ____________________ layer provides evidence for a meteorite impact at the end of the Mesozoic.

Rare in Crustal Rocks, but Abundant in Some Meteoroids, the Presence