Unwanted emails are called: malware, phishing, spam or virus
emails that pretend to be from a trusted source that are trying to get sensetive info are:
you should never use you professional email for personal emails: t or f

An atom's diameter is about 0.1 nanometer (1×10-9m), and a human hair is about 1×10-3m. how many times greater is a human hair than an atom's diameter? sorry pushed wronf button but this is math

Singing in the rain: this first part of the film shows the early history of motion picture. how accurate do you think the portrayal of the early motion picture industry is? why? is historical accuracy important in films and theater productions? explain.

How do we use the sumif formula (when dealing with different formats) ?