a person that studies gems is called a gemologist.
A person who studies the earth is called a geologist.
A person who studies animals is called a zoologist.
neurologist
A person who studies plants could be an agronomist or a botanist.
A person who studies genealogies is a genealogist.
A person who studies philosophy is called a philosopher.
A person who studies organisms is called a biologist.
a person who studies people but not an psychologist
a person that studies gems is called a gemologist.
what do you call somebody who studies snails.
A person who studies birds is called an ornithologist.
A person who studies birds is called an Ornitholoigst
A person who studies poisons is called a toxicologist.
A person who studies lichens is called a lichenologist.
A person who studies theology is called a theologian.
A person who studies the mind is called a psychologist.