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Q27 according to the passage the periodic behavior

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Q27: According to the passage, the periodic behavior displayed by commuter diatoms under constant laboratory conditions is characterized by which of the following? A. Greater unpredictability than the corresponding behavior under natural conditions B. A consistent periodic schedule in the short term C. No difference over the long term from the corresponding behavior under natural conditions D. Initial variability caused by the constant conditions of the laboratory E. Greater sensitivity to environmental factors than is the case under natural conditions 28
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Answer: -------------------------------------------------------------------------------- Q28: The primary purpose of the passage is to A. dispute the influence of environmental factors on the tide-associated behavioral rhythms displayed by the diatom Hantzschia virgata B. describe how certain tide-associated behavioral rhythms displayed by the diatom Hantzschia virgata have changed over time C. compare tide-associated behavioral rhythms to solar-day behavioral rhythms in the diatom Hantzschia virgata D. examine how certain biological and environmental influences affect the tide- associated behavioral rhythms displayed by the diatom Hantzschia virgata E. identify certain environmental factors that limit the effectiveness of the biological clock in the diatom Hantzschia virgata Answer: ------------------------------------------------------------------------------------------------------------ Q29: Faulty voting equipment, confusing ballots, voter error, and problems at polling places have been cited by a new study of the 2000 United States presidential election, which estimated that they did not count 4 million to 6 million of the 100 million votes cast. ------------------------------------------------------------------------------------------------------------ Q30: 29
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The ancient Anasazi harvested such native desert vegetation as the purple-flowered bee plant, what they now commonly call wild spinach in northern Arizona and other parts of the southwestern United States. A. what they now commonly call B. a plant that they now commonly call C. now commonly called D. and is mow commonly called E. which it is now commonly called ------------------------------------------------------------------------------------------------------------
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