In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Pelvic fins are well developed, and rather narrow, with _ to ten fin rays.

Answer: nine


Question: Frozen grafts can have a shelf life of up to _ years.

Answer: five


Question: Pheromone traps are only indicators of activity and _ thresholds are associated with trap catches.

Answer:
no