for advertisements for commerical purpose
pejises
Different styles and catchy tunes get people's attention. Plus, once you recognize a song to a specific advertisement, and you hear it elsewhere, your mind will think of that advertisement first. As well, with the same idea above, when you come across this same advertisement, you are more likely to study it more in-depth after recognizing the tune.
If you start out with a solution and you put the same amount of solution in different types of glassware, it will always be the same no matter what.
Becouse people have different eyes and telescopes
Yes.
The reasons are the same as why a bird's eye view of your house would be different from the front or side elevations.
no
No. They are two different social networking websites.
I found that they are not a known brand. It seems it was created to appear as a luxury design for the purpose of selling them on those so called police auction sites. I found it to be shadowy and wouldn't buy it. I almost fell for it but if you search for Antonio Cortalli it will bring you to these websites that look like they have a different URL, but they are all the same formatted websites with different URLs.
They don't. Other things being equal (especially if the size and distance is the same), a hotter star will appear brighter, and in a different color.
They appear different but work the same
You can't. The same serial number can appear on guns from different manufacturers and on different models from the same manufacturer.