In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: The enzyme pepsin plays an important role in the digestion of proteins by breaking down intact protein to what short-chain amino acids? Answer: peptides

A: The enzyme pepsin plays an important role in the digestion of proteins by breaking down intact protein to peptides short-chain amino acids.
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Q: Question: Organisms categorized by what species descriptor demonstrate a version of allopatric speciation and have limited regions of overlap with one another, but where they overlap they interbreed successfully? Answer: ring species

A: Organisms categorized by ring species species descriptor demonstrate a version of allopatric speciation and have limited regions of overlap with one another, but where they overlap they interbreed successfully.
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Q: Question: Alkanes are nonpolar and therefore do not attract what? Answer: ions

A:
Alkanes are nonpolar and therefore do not attract ions.
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