Why are ventilation systems in high-rises more complex than in smaller buildings? High-rises often have sealed windows. Cigarette smoking is more common in high-rises. High-rises do not have chimneys. The stack effect is reversed in high-rises.

Because if a good speech is delivered badly it can bore the audience, confuse them, or make them distrust the speakeri think they all come back to this one, except that last answer because that is false. if your audience starts making fun of you or gets distracted it is because they are either bored, confused or distrust you.

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