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... :)
A traditional flood control method used to keep a stream's flow in its channel is known as <em /><u>artificial levees.
</u>Artificial levees are forms of dykes or floodbanks used to regulate water levels and prevent any flooding from happening. <u>
</u>
Each cell that are divided will have complete genetic information itself. So both of them will survive.
Option A.
<h3><u>Explanation:</u></h3>
The sperm and the ovum fuse to form a zygote. This zygote then undergoes cleavage divisions to divide into many cells called morula. Now in the two celled stage, if the cells divide away from each other, it gives rise to monozygotic twins or identical twins.
Both the cell contains nucleus and chromosomes or DNA inside the nucleus. So both of them contains genetic information. Thus both of them survives and develops into two identical twins. This may develop into same amniotic sac or different amniotic sac.
Water's polarity can be responsible for many of it's properties including it's attractiveness to other molecules. Water molecules attract one another based on the attraction between the positive end of one water molecule and the negative end of the other. Also the unequal sharing of electrons gives the molecules a slight negative charge near it's oxygen atom and a slight positive charge in it's hydrogen molecule.