How did evolution by natural selection occur with the pocket mouse? Claim;

Evidence:

Reasoning

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.