Everything begins in Genesis when God created the universe as we know it. But many things began again, and some things changed after the flood in Genesis chapter nine. Here are a few of the things:
V1: Every beast of earth had to replenish the earth from those that came from the ark.
V2: The control of man was established (or reinstated?) over the animals, birds, fish and insects.
V3: Every animal and plant given to man for food (as modified by clean/unclean dietary laws).
V4: Men are not to eat blood or bloody meat.
V5,6: Capital punishment is instituted.
V7: Man is to multiply and populate the earth.
Vs 8-17: God established the covenant of the rainbow: There will never again be a catastrophic, world-wide flood.