Discuss the artesian system that underlies South Dakota and extends to central Texas in the Dakota
Sandstone What will be an ideal response?
The aquifer is recharged where it is exposed along the margins of the Black Hills of South Dakota, and
the aquifer is used extensively for irrigation. The hydrostatic pressure of this system was originally
enough to produce free-flowing wells and operate waterwheels, but now the hydrostatic pressure in
some of the wells is so low that the water must be pumped.
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____________________ are inefficient because they are expensive to build, they discharge toxic emissions, and they can produce a toxic ash
Fill in the blanks with correct word
A plot of mean monthly temperatures and precipitation summarizing the climate at any point on Earth is called a(n) ____
a. hydrologic cycle b. moisture index c. isohyet d. water budget e. climograph
Which crop was one of the first to be domesticated?
A) soybeans B) corn C) chickpeas D) sorghum E) rice
The federal law that first banned the dumping or discharge of wastes into any body of navigable water in the United States was the
A. Water Quality Improvement Act of 1970. B. Refuse Act of 1899. C. Federal Water Pollution Control Act of 1956. D. National Environmental Policy Act of 1969.