Final answer:
According to Christianity, the two basic explanations for the origin of the universe and life are Creationism and intelligent design.
Step-by-step explanation:
The two basic explanations of how the universe and life within it came into being according to Christianity are Creationism and intelligent design. Creationism is the belief that God created the universe and everything in it, while intelligent design suggests that the complexity and order of the universe are evidence of an intelligent creator.