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Q20 the passage suggests which of the following about

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Q20: The passage suggests which of the following about the accuracy of the commuter diatom’s biological clock? A. The accuracy of the commuter diatom’s biological clock varies according to changes in the tidal cycle. B. The unusual accuracy that characterizes the commuter diatom’s biological clock is rare among intertidal species. C. The commuter diatom’s biological clock is likely to be more accurate than the biological clock of a species that is subject to less intense environmental pressures. D. The commuter diatom’s biological clock tends to be more accurate than the biological clocks of most other species because of the consistency of the tidal cycle. E. The accuracy of the commuter diatom’s biological clock tends to fluctuate when the diatom is observed under variable laboratory conditions. Answer: -------------------------------------------------------------------------------- Q21: Which of the following can be inferred from the passage about the effect of the solar-day cycle on the tide-associated periodic behavior displayed by commuter diatoms? -------------------------------------------------------------------------------- Q22: According to the passage, the periodic behavior displayed by commuter diatoms under constant laboratory conditions is characterized by which of the following? 24
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-------------------------------------------------------------------------------- QX: According to the passage, each of the following is characteristic of the tide-associated periodic behavior of commuter diatoms EXCEPT: --------------------------------------------------------------------------------
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