Please answer this ill give the brain thing but i need a answer QUICK!

List two limitations of natural selection

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from