An environmental scientist or an environmentalist.
A scientist who studies tornadoes is called a meteorologist or an atmospheric scientist specializing in severe weather research.
A scientist who studies soil is called a soil scientist or a pedologist. They explore the composition, structure, and processes within soil to understand its properties and how it affects ecosystems and agriculture.
A scientist who studies maps is called a cartographer. Cartographers create and analyze maps to visually represent geographical information and spatial relationships.
A scientist who studies gems and crystals is called a gemologist or mineralogist. They analyze the physical and chemical properties of gemstones and minerals to understand their formation, composition, and characteristics.
A biotechnology scientist.
An Oceanographer. Marine Biologist, that sort of thing.
A scientist that studies viruses is called a virologist.
A scientist who studies mollusks is called a malacologist.
A scientist that studies bears would be called an ursinologist.
An aviologist.
biologist
virologist
A meteorologist.
astronomer
Mineralogists
A vulcanologist