The problem with the terms Natural and Supernatural is that they do not fit the world we live in. For instance most people agree that the Natural cannot think, but humans can think. Does that make humans Supernatural? I think not. But we are rational and spiritual beings as well as physical. This means that we must rethink what it means to be Natural and Supernatural.
1) I do not want to confuse the physical with God, but I must point out that went humans seek evidence for the existence of God, the first place we look is to the heavens, the universe for the Power of God as evidenced in the Creation. The Universe is evidence for the Power and existence of God the Father, Creator of the heavens and earth.
2) The universe is not only evidence for God the Father, but also evidence for God the Son, Jesus the redeemer and Logos. Science and life are based on the fact that the universe is not chaos, but cosmos, harmony and order. Jesus is the source of this harmony and order, but also restores this harmony and order as the Logos, which is Rational. The universe is rationally structured, humans are rational and God is the Source of rationality.
3) The universe is not only evidence for the power and rationality of God, the universe is evidence for the goodness of God and God's love for humans and God's Creation. This spiritual aspect of the universe is evidence for God the Holy Spirit. If the universe is not evidence of power, rationality, and love, then it is not from God as God has revealed Godself. It works both ways.
If Natural Selection is based on conflict, rather than love, then it is not from God and life based on conflict is from the Evil One, just as victory based on lies cannot stand because it is from Satan whom is the Father of Lies. ,