Select the word which means the same as the group of words given.

A person who studies the structure of the earth

Geologist

The word that means the same as the group of words "a person who studies the structure of the earth" is geologist.

A geologist is a scientist who studies the Earth's physical composition, history, and processes. They study the rocks, minerals, and fossils that make up the Earth, as well as the forces that shape the planet, such as plate tectonics and erosion.

Geographers study the Earth's physical features, such as its landforms, climate, and vegetation. They also study the human interaction with the environment.

Gemologists study gemstones and other minerals. They evaluate their quality, rarity, and value.

Gynaecologists are doctors who specialize in the health of women's reproductive organs.