Answer:
indicator can mean two different things,
1. a thing, especially a trend or fact, that indicates the state or level of something.
2. a gauge or meter of a specified kind.
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<span>Enzymes and antibodies are functional proteins. the second one is the answer</span>
The collision theory<span> is based on the assumption that for a reaction to occur it is necessary for the reacting species atoms or molecules to come together or </span>collide<span> with one another.\</span>
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The Uvula
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