Pathologist
A biologist studies all life forms, including animals, plants, and microorganisms. They focus on understanding the structure, function, behavior, and evolution of living organisms.
An ecologist studies the interactions among organisms and their environment. They investigate how living organisms interact with each other and with their physical surroundings. This includes studying topics such as ecosystems, biodiversity, and the impact of human activities on the environment.
A forensic pathologist works at a morgue. They are medical doctors who specialize in investigating the cause of death by examining bodies and performing autopsies in order to determine the circumstances surrounding a person's death.
A limnologist, or aquatic ecologist, would study algae in streams to determine if changes are occurring that could make the water unhealthy. They would analyze the type and abundance of algae present, as well as other water quality parameters, to assess the ecosystem's health and potential impacts on water quality.
Charles Darwin was a naturalist and biologist who is best known for his groundbreaking work in evolutionary theory. He is considered one of the pioneers of modern biology for his contributions to the understanding of the process of natural selection and the concept of evolution.
A pathologist studies dead bodies to find out the cause of death.
sociologist
Anthropologist.
A mineralogist studies minerals.
An ecologist studies pollution
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
cosmologists
seismologist