Answer:
Usually, Google Docs save automatically. If you remember some keywords that you typed, try searching for it. For example, if you typed up a report about dogs, search "dogs" when you're on the Google Docs home screen.
Explanation:
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Answer:
The expression is :
π[cd) + π(g,h) ],[π(e,f)+π(a,b)])
We will use foreign key and primary key
Answer: The answer is C
Explanation: When it comes to research papers your topic shouldnt be too broad. Your topic should be broad enough you can find a good amount of information but not too focused that you can't find any information.