Examlex
What aspect of a population is critical in determining a species in Ernst Mayer's "biological species concept"?
Dip
The angle that a layer or structural surface makes with the horizontal, measured perpendicular to the strike.
Fault
A crack in the Earth's crust resulting from the movement of rock on either side of the crack, which can lead to earthquakes.
Tectonics
The study of the Earth's crust and mantle involving the processes that structure the Earth's surface, including the formation of mountains, continents, and oceans.
Minerals
Naturally occurring, solid chemical compounds or elements with a defined composition and crystal structure, found in the Earth's crust.
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