The residence time of water in the atmosphere is about:
A) 12 hours.
B) 1 day.
C) 10 days.
D) 100 days.
Answer: C
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National recreation areas are part of
A. the National Park System. B. the National Wilderness Preservation System. C. National Wildlife Refuges. D. National Resource Lands. E. National Forests.
DC is mainly produced by a
A. battery. B. generator. C. both of these D. neither of these
What is the highest elevation shown in this part of the Panamint Range?
The question is based on Map T-10, the “Furnace Creek, California” quadrangle (scale 1:62,500; contour interval 80 feet; dotted lines represent 20-foot contours). This portion of the Furnace Creek quadrangle shows the Panamint Range and the western side of Death Valley in Death Valley National Park (36°19'08"N, 116°53'25"W). Several large alluvial fans can be seen along the eastern front of the Panamint Range. The basin floor here is called the Death Valley “salt pan,” because salts have accumulated here in great thicknesses. What will be an ideal response?
Which of the following best describes ionic bonding?
A. one atom giving up some of its electrons to another atom B. two atoms exchanging a set of electrons C. two atoms sharing a set of electrons D. when two elements with same charge are held together by electrostatic forces E. none of the above