Certain species of fish swim in large clusters called schools,whose function is not entirely understood.Experiments have shown that individual fish,when removed from a school,demonstrate higher heart rates than those found withing the school.Fish may experience stress at being separated from fellow members of their species,but an alternative explanation is that,for hydrodynamic reasons,swimming alone requires more physical exertion.
Which of the following,if discovered in an experiment,would support
...
Which of the following,if discovered in an experiment,would support
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