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Noise and Interference in Various Types of Communication

In communication studies and information theory, noise refers to anything that interferes with the communication process between a speaker and an audience. It's also called interference. Noise can be external (a physical sound) or internal (a mental disturbance), and it can disrupt the communication process at any point.
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Why Insects Invade Your Home in Cold Weather

Do you notice that every fall, insects collect on the side of your home? Worse, they even get inside. Do you find clusters of bugs near your windows and in your attic? Why do insects come inside your house in the fall, and what can you do to keep them out? Your House Isn't Just Keeping You Warm Different insects have different ways of surviving the winter.
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Grade School Science Fair Project Ideas

Do you need a great idea for a science fair project? This is a collection of grade school science fair project ideas submitted by readers: Lemons & Batteries Can you use a lemon, wire, and a a human to test it on to make a battery using their saliva? If so, how does it work? Results -yes, you can make an electric shock.
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Profile of Serial Killer William Bonin, The Freeway Killer

William Bonin was a serial killer suspected of sexually assaulting, torturing and killing at least 21 boys and young men in Los Angeles and Orange County, California. The press nicknamed him the "The Freeway Killer," because he would pick up young boys who were hitchhiking, sexually assault and murder them, then dispose of their bodies along the freeways.
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Chord vs. Cord: How to Choose the Right Word

The words "chord" and "cord" are homophones: They sound alike but have different meanings. They're among the word pairs in English that are commonly confused, and their spellings have even flip-flopped throughout the centuries. For our purposes in this millennium, though, a "chord" with an "h" is a simultaneous playing of notes or a math term, and a "cord" is a rope or cable-among other meanings.
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Overview of High School Chemistry Topics

Are you confused by all the topics in high school chem class? Here is an overview of what is studied in high school chem, with links to essential chem resources and worked chem problems. Introduction to Chemistry To study high school chem, it's a good idea to know what chem is. Math Basics Math is used in all the sciences, including high school chem class.
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