A.
items
The colon should follow the clause.
<em>Answer: the Reader's Guide</em>
<em>Explanation: Hopefully this helps you (Pls don't report if this is wrong.)</em>
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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Answer:
1st
Explanation:
informal and formal tones make a contrast because they are different tones
The beginning is the central idea of everything written after it.
Hope it helped,
Happy homework/ study/ exam!