<span>D. Make changes to your code
Variables allow the ability to easily substitute numbers for other numbers.
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Answer:
Google uses automated programs called spiders or crawlers, just like most search engines, to help generate its search results. Google has a large index of keywords that help determine search results. ... Google uses a trademarked algorithm called PageRank, which assigns each Web page a relevancy score.
It is a number that is expressed in the binary numerical system
