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Reef: Quiz

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Question 1: In addition, reef structures within a sequence of sedimentary rocks provide a discontinuity which may serve as a trap or conduit for ________ or mineralizing fluids to form petroleum or ore deposits.
Carbon sinkBiofuelFossil fuelCarbon tax

Question 2: During the ________ period, the conical or tubular skeletons of Archaeocyatha,an extinct group of uncertain affinities (possibly sponges), built reefs.
CambrianDevonianGeologic time scaleCambrian explosion

Question 3: However, there are some unusual examples of well preserved aragonitic rugose corals in the late ________.
CarboniferousPermianGeologic time scalePermian–Triassic extinction event

Question 4: Rugose corals built their skeletons of ________ and have a different symmetry from that of the scleractinian corals, whose skeletons are aragonite.
CalciteIkaiteCarbonCalcium carbonate

Question 5: In nautical terminology, a reef is a rock, sandbar, or other feature lying beneath the surface of the water (six ________ or less at low water).
German languageFathomPolish languageDutch language

Question 6: Reef types include fringing reef, ________, as well as atolls.
Coral reefEstuarySalt marshTide pool

Question 7: There are a number of biotic reef types, including oyster reefs, but the most massive and widely distributed are tropical ________.
Salt marshEstuaryTide poolCoral reef

Question 8: ________ such as shipwrecks are sometimes created to enhance physical complexity on generally featureless sand bottoms in order to attract a diverse assemblage of organisms, especially fish.
R142 (New York City Subway car)Artificial reefAquacultureR142A (New York City Subway car)







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