In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[EX Q]: Cockroaches require food every _ to ten days but mut take in water every ten days.
[EX A]: seven

[EX Q]: Weasels reaching _ to six years are regarded as fully mature.
[EX A]: five

[EX Q]: Degradation is a result of _ simultaneous processes.
[EX A]:
two