Answer:Search engine optimization (SEO) is the process of optimizing your online content so that a search engine likes to show it as a top result for searches of a certain keyword. ... When it comes to SEO, there's you, the search engine, and the searcher.
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thermometer , petrol pump
 
        
             
        
        
        
The use of virtual reality technology, especially for remote control of machinery or for apparent participation in distant events.