What is the origin of life?
It's believed to be the last universal common ancestor. https://en.wikipedia.org/wiki/Last_universal_ancestor In a wider sense, life originates from stars that produce supernovas.
Adam and Eve gave birth to human race and they were created by God!
Well personally i dont believe in the bible. I believe that there is a higher power that watches over us, and guides us through life (such as a guardian angel) and toward a destiny. Look up an evolutionary scale on google :)
God said "Let us make man in our image"
God made Adam and Eve, the first pair of humans.