9 Terms
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Geology
The science that comprises the study of the solid Earth and the processes by which it is shaped and changed.
Industry: Earth science
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Geology
Charter group
Earth science; Geology
A group representing the most typical culture of a host community. These can be used as a model for immigrants.
Birth control
Earth science; Geology
Methods that are designed to limit the size of families. The use of contraceptive methods are important here.
Cut-off grade
Earth science; Geology
The lowest grade of mineralized material considered to be economic and used to calculate the ore reserve in a deposit
Principal aquifer
Earth science; Geology
The aquifer or combination of related aquifers in a given area that is the important economic source of water to wells.
Boll weevil
Earth science; Geology
A small, greyish beetle of the southeastern United States with destructive larvae that hatch in and damage cotton bolls.
Cross sea
Earth science; Geology
Confused, irregular state of the sea due to different groups of waves from different directions raised by local winds.
Aurora borealis
Earth science; Geology
Also known as the northern lights; spectacular coloured lights that appear in the sky in the far Northern Hemisphere.
