What is a main cause of an aurora?

Which of the following is not a symptom of chronic fatigue syndrome

What did creator markus “notch" persson initially call his game

William travels a lot on business purpose. he needs to regularly communicate with his business partner. he also needs to send out weekly reports to his boss while he is traveling. which web-based application best suits william’s needs? (social media, webmail, wiki) is the best web-based application for william. he can access this application via the internet using a (digital cable, fax machine, web browser).