YES IT IS POSSIBLE
There is no indication that Mello does or does not believe in God unless it is that of a Shinigami .
yes, i believe she is. (i have her and there is no indication that she is a he)
No, they are not supposed to believe in UFO's or Gypsies. However they do believe in saints. (Saint Mary, Saint John, Saint Peter.)
no I define 'see things that are not really there' as illusions which are not possible. the devil is also not possible, whether you believe in religion or not. Anyway, the devil is supposed to be chained in the pit of hell. or is God not omnipotent to do that?
I do not believe that you have to but I do believe that it's recommended that you do.
There is no indication that he was killed. I believe your question might have been influenced by the film 7am Arivu. It is simply a fictionalization of the monk's life. Chinese records simply state that he died. Given that he was supposed to be 150 years old (surely an embellishment), he probably died of old age.
I believe that means that you are supposed to multiply the numbers.
I believe in Nubia and Ethiopia. According the World Civilizations AP Edition.
I believe their supposed to be calm but they can be hiper at times:)
No 2012 is not real.
it is supposed to be a lucky charm if you believe in superstition
I believe it is possible to get cried on by the Spirit