You have a round pie plate filled with water. You carefully release a drop of red food coloring in the center of the plates. What's happens to the red dye molecules right after the drop is placed?

They diffuse within the water in the round pie plate

Explanation:

The molecules of the red dye will diffuse and gradually spread through the water in the round pie plate.

By definition, diffusion involves the movement of molecules of substances from the region of higher concentration to the region of lower concentration.

Once the the drop of the red food coloring reaches the water, its molecules diffuses out in the water till they are uniformly distributed in the water.

i am going to guess that it is co2.

the fossil record provides evidence of a common ancestor to many species.