Crossword Genius

Earth science (7)

Ross

I believe the answer is:

geology

'earth science' is the definition.
(I know that geology is a type of earth science)

This is the entire clue.

(Other definitions for geology that I've seen before include "Science that deals with the history of rocks" , "The science of the earth's crust" , "The scientific study of the earth's crust" , "Earth science" , "Study of Earth, its rocks" .)

I've seen this clue in the Sydney Morning Herald and The Times.
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