Examlex
refer to an 8-digit student id at a large university. The eighth digit is a check
digit equal to the sum of the first seven digits modulo 7.
-Find the check digit of the student id starting with 3179 822.
Bacteria
Microscopic, single-celled organisms found in virtually all environments, some of which can cause disease.
Water Table
The level below which the ground is saturated with water, an important concept in hydrology and environmental science.
Aquifer
Porous rock layer that holds some groundwater.
Surface Water
Water that is found on the surface of the earth, such as rivers, lakes, and ponds, as opposed to groundwater.
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