How is the character Clarisse McClennan differentiated from that of Montag?

Clarisse is an odd duck by this new world’s standards. She likes nature, she isn’t into violence or TV, and she’s not into vacant socializing. She’s interested in odd things, which is what draws her to Montag – he’s a fireman without the typical fireman qualities. She gets to ask him questions about his job (How long have you been a fireman? Why do you do it?), questions that no one else in his position would ever be willing to answer.