An example of selective breeding is breeding cattle to produce better meat.
Sea level - 100%
mid-level elevation - 4500M and 57%
Peak - 8850M and 33%
Around 1 billion nerves reside in your body! The nerve cells unlike many other types of cells does not perform mitosis resulting in paralyzation. :)
An adult , or mature i think sry if not the answer you were looking for
