Which word with the root micro can be defined a small sound

What is wong with this sentence cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

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Read this passage from "the american dream." it does not say all white men, but it says all men. . how does the second part of the sentence relate to the first part?