An elephant ears are designed to help cool it down on hot days if an elephant has larger ears it can cause self down quicker if the temperature becomes constantly hotter how would the elephant population adapt?

First of all elephants' ears contain many blood vessels. As an elephant flaps its ears on hot days, the blood in these veins cools, which then cools the elephant's brain and travels back through the body, reducing body temperature. So from this passage it is easy to tell that the lephant would go through a Physiological adaptation to make it's ears bigger to help the population survive.

Hope this helps!