cosmologists
Cosmologist
A mineralogist studies minerals.
An ecologist studies pollution
It's a scientist that studies the laws and rules of the physics of the universe
The kind of scientist who studies Urology would be a Biologist, since Urology concerns a biological function (urination). If you mean the kind of doctor who studies Urology, that would be a Urologist.
meteoroligists
Audiologist
An Ichthyologist.
Botanist
seismologist
a biologist
Mathmaticion