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

[EX Q]: Boolean operations is a method of combining _ meshes together.
[EX A]: two

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

[EX Q]: Barn owls live from _ to seven years.
[EX A]:
five