Base on the given information, genetically modified can be regarded as the phrase while skepticism serves as a noun.
I will like to define a phrase as group of words that serves as a grammatical unit and they are always together.
A noun on the other hand can be regarded as name of anything or person and from the question, the skepticism serves as a noun while genetically modified is a phrase.
Therefore, genetically modified can be regarded as the phrase while skepticism serves as a noun.
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