I would say immigration only.
emigration would theoretically reduce the genetic variation as unique individuals leave, but immigration would bring unique traits into circulation in an ecosystem.
I'm not super great at biogy tho so this might not be right... :)
Answer:
I think apples 6 inches from floor
Explanation:
hopefully you get it right
The water molecules become close together and becomes a solid, the temperature is cold because the heat leaves the cup.
