Most monotheistic religions posit that the singular God is all-powerful, all-knowing, and completely good. The problem of evil asks how the apparent contradiction of these properties and the observed existence of evil in the world might be resolved. Scholars have examined the question of suffering caused by and in both humans and animals, suffering caused by nature (like storms and disease). These religions tend to attribute the source of evil to something other than God, such as demonic beings or human disobedience.