Question on the nature of the world

If we were to take the YEC position seriously and Genesis 1 represents 6 literal days, how much of the universe would change, what would have to change about the physics, chemistry, and biology? I know that there would be significant ramifications but I do not know what they would be.

“Let your conversation be always full of grace, seasoned with salt, so that you may know how to answer everyone.” -Colossians 4:6

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