1. My friend is a chef, he works long hours, but he loves it.
2. Are you really a pilot? Wow.
Answer:
The answer is D obviously
Because if some people are quiet they could be holding in something serious or if you are in class and you are always quiet your peers and teachers are going to wonder if something is bothering you
Hope you see this helpful
Answer: "pheromones" .
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<u>Note</u>: "Odorless chemicals" that serve as "signals" to members of one's own species are called: <u> pheromones </u><u /> .
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