In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Thermal equilibrium occurs when _ bodies have the same temperature.

Answer: two


Question: Cluster flies are covered with fine golden hairs and have _ stripes on the thorax.

Answer: no


Question: Caterpillars grow rapidly and typically complete their larval development in _ to eight weeks.

Answer:
seven