I believe the answer should be mates...(2)
The nucleaus controls everything within cells
Kidneys for transplant can come from a living or a cadaver. Nephrectomy is the surgical removal of one or both kidneys. It is done by removing a healthy kidney from what you call a donor.They are usually to treat kidney diseases and injuries.
I think that the plains, because the temp. is the same all around, cuz its flat... the mountains get cold at the top