An unmanned aerial vehicle (UAV), commonly known as a drone and also referred by several other names is an aircraft without a human pilot aboard.AVs are being developed and deployed by many countries around the world. Due to their fast proliferation, there is no comprehensive list of current UAV systems or current holders. For a list of models by country, see: List of unmanned aerial vehicles.
Writing Effective Introductions. Great writers know that effective and impacting essays begin with an interesting and engaging. introduction that reveals their thesis and purpose, while capturing the readerâs attention. Introductions help writersâ¦. â Reveal their essayâs central idea or thesis. â Guide readers to important ideas in the body of the essay.
The introduction is the beginning of an essay. It does the same job for an essay as the topic sentence does for a paragraph. In a paragraph, the topic sentence tells the reader what the subject of the paragraph will be and how it will be developed. In an essay, the introduction, which can be one or two paragraphs, introduces the topic. There are three parts to an introduction: the opening statement, the supporting sentences, and the introductory topic sentence. There are many ways to write an introduction, but it is necessary to include each of the three parts: