Because its air we cant see it thats why its clear because it would be scary if we were able to see air! :)
This is a tricky question - new studies actually show that people who skip breakfast aren't at all heavier than people who don't skip it. The myth that people who regularly breakfast aren't as heavy as people who do skip it has arisen through bad scientific studies that were being conducted in the past. Newer ones, however, show that this isn't the case. For that reason, your question is invalid :)
A build up of plaque on the inner lining of an artery.
