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- Can you answer all parts to this question regarding fish otolith (Please answer all 3 parts and type your answer please A: What is an otolith? B: How do fish use them? C:How do humans use them?The spiral organ is located within the of the internal ear. (a) utricle (b) bony labyrinth (c) vestibule (d) cochlea1) The function of structure 1 is to detect ______. vibration high pitched sounds low pitched sounds angular acceleration