Organisms rely on a relatively narrow range of what?\nOptions:\n- (A) Decibels\n- (B) water\n- (C) food\n- (D) relativity\n- (E) acidity\n- (F) spectrum\n- (G) balance\n- (H) Light Let's solve this problem gradually.

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All life relies on a relatively narrow range of pH, or acidity. All organisms have a life-span. Organisms rely on a relatively narrow range of acidity. So the final answer is (E).
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