In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Sexual selection has _ components, intrasexual competition and intersexual selection.

Answer: two

Question: Snapdragons are annual flowering plants that grow _ to four feet and thrive on sunshine.

Answer: one

Question: Young emus are very vulnerable to disease until they are about _ months old.

Answer:
three