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-There are ____ non-isomorphic trees with four vertices.
Subject Line
The title or headline of an email, designed to provide a summary or a reason for the email to encourage the recipient to read it.
AIDA Message
A marketing communication model that stands for Attention, Interest, Desire, and Action, intended to engage consumers and motivate them to act.
Indirect Approach
A communication technique where the main message is not presented directly at the beginning but is instead gradually approached through background information or context.
Carbon Footprint
The total amount of greenhouse gases produced by human activities, expressed as the equivalent amount of carbon dioxide.
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