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To sort 10 organisms using a dichotomous key, you need a minimum of 9 couplets. Each couplet provides a choice that effectively reduces the number of organisms by half until only one organism remains. Thus, with each couplet, the number of remaining options decreases, and for 10 organisms, 9 couplets are needed to reach the final identification.

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4mo ago

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To sort 10 organisms using couplets, you would need at least 4 couplets. This is because each couplet can divide the organisms into two groups at a time, cutting the number of remaining organisms in half with each comparison, until all 10 organisms are sorted.


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