I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food. In the beginning, Elohim did not give animals for food. Obviously, it did not remain that way.
Every covenant has two sides.
Elohim 's side, the sign of which is the rainbow, is that He promised to never again destroy every living creature on the face of the earth through flood. Noakh had several responsibilities in this covenant. The first is found in Chapter 9 verse 1. Noakh and his family are told to be fruitful and increase in number and fill the earth. Just as I gave you green plants, I now give you everything.