Selective selection,since being smaller is an advantage the rabbits got smaller similar to evolution
I believe the answer is the first one you listed,
Hope this helps..
This is the Definition of coevolution
<span>I am pretty sure its the diaphragm, but its not located behind the lungs its below the lungs. </span>
The body is to could to function properly and has to spend all it energy on trying to keep you warm
