Who is ever to say that Adam and Eve were created as adults?
Nowhere does the bible give reference to this.
In the beginning, there was only God, and then everything came from God.
The periods of time mentioned in Hebrew equate to the Greek 'Aeon'. 6 Aeons. For how is a day defined when neither sun nor earth exist on the first 'day'?
'And no helper was found for him'. The animals were made BEFORE Adam. And he was to pick a helper from them but none was suitable (as an animal is not suitable 'pairiing' for a man), and so Eve was made from him.
He created them male and female that they may become one flesh, subdue the Earth and walk with God, as they were made from one flesh.
Separated for purpose. Brought together by their means and their end was, and is, that they are as one flesh, although 2 very distinct and separate entities.
As we are we to God. To be his brides.
And their sons were separate, yet altogether 'humanity', as Jesus is to humans 'Lord', and the Father is to everything 'God'.
There is a relation to everything.
God made the laws of physics and so the laws of physics are infallible 'on this Earth'.
Everything was designed by God. So the way that particales move inside atoms, or light and heat radiate through vacuums, that is God's work. God's design.
Science does not have to be in contradiction to God. God created the Earth, and the moon, stars, universe as it is. And science is just the practice of studying it. Cause and effect.