There is a great chance that tortillas you get in supermarkets contain a great deal of preservative harmful to your body. Why not make your own, it's super easy.
Antarctica is Earth's southernmost continent, containing the geographic South Pole. What else do you know about this vast ice and snow covered lands except that it can get really cold?
It's highly recommended to protect your computer against Virus, Malware, Spyware and other potential threats. Microsoft Security Essentials is one of the better, free solutions.
