A search engine is a website that allows users to look up information on the World Wide Web (WWW), part of the Internet. The search engine will achieve this by looking at many web pages to find matches to the user's search inputs. It will return results ranked by relevancy and popularity by the search engine. The most popular search-engines are Google Search and Bing. Older services include Webcrawler are, Yahoo! Search, Ask.com, Lycos, and Alta Vista. Examples of specialized engines are Ecosia (supports ecological goals) or Tenor (picture engine). To use a search engine you must enter at least one keyword into the search box. Usually, an on-screen button must be clicked on to submit the search. The search engine looks for matches between the keyword(s) entered and its database of websites and words. After the user inputs their search or query into the search bar, a list of results will appear on the screen known as the search engine results page (SERP). This list of webpages contains matches related to the user's query in a particular order determined by a ranking system. Most search engines will remove "spam" pages from the list of results to provide a better...