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:
40 ft may be not sure . .......
<span>Letter A is the answer. Almost all plant cells have single large central vacuole. These large central vacuoles of the plant cells are filled with water and can take over 80% of its cell volume. This is surrounded by a single membrane called tonoplast. The role of the central vacuole is maintaining the plant cell's pressure.</span>
The physical differences between humans and apes are: human have <span> relatively short and weak arms compared to their legs. Human's toes become shorter, so human's feet do not have the ability to effectively grasp and manipulate objects. </span><span> Human feet are longer than the feet of apes, in order to better support the body. </span>
