The phrase is a subtle suggestion that if a treat (like candy) is given, then the child will not perform a “trick" (mischief) on the owner of the house. This popular Halloween custom has its origins in the ancient practices of “souling" and “guising."
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Answer: ethos, an appeal based on the speaker's credibility
Explanation: Franklin Delano Roosevelt was an American statesman and political leader who served as the 32nd president of the United States from 1933 until his death in 1945. Roosevelt chooses that persuasion to provide the opportunity to convince the reader to adopt a particular viewpoint.
Energy Moves through the ecosystem; a biological community of interacting organisms in their physical environment. In a food web/food chain you have your producers, consumers(primary, secondary, etc.) and withing the order of the chain, 10% of that energy is really consumed, while 90% of the energy is lost to heat.