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... :)
All science involves observation.
When there isn't enough room in the cell for two complete molecules of DNA, the prokaryote stops replication and undergoes cell division.
Answer:
An X-ray is done to diagnose the position of bones in the body whether its broken or not or in right place or not.
An X-ray machine is turned on to provide a visual of the bones showing bone condition. When the machine is turned on, X-ray travel through the body tissues, and due to the presence of calcium in bones, they absorb more X-rays, thus bones appear white against the black background of a radiograph.
These white bones on the radiograph will show the position of bones whether it's broken or not.
So, both the visuals that is X-ray and drawing showing visuals (the bones appear white) contribute valuable data to the given situation.
