You have two X-rays taken, and the time of exposure was limited. According the U.S. Nuclear Regulatory Agency, your radiation exposure for the X-rays was
A) below any level to cause harm.
B) minimal, but does pose a slight health risk.
C) harmless, because medical radiation is not the same dangerous energy as radiation from nuclear energy.
D) a different type of radiation that does not cause biological damage.
B
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When examining metamorphic rocks it is important to understand
A. that the tremendous pressure has affected the overall chemical composition of the rock. B. that the starting composition of the original rock will have no influence on the metamorphic rock that forms. C. that the amount of pressure is relatively unimportant in metamorphic rocks. D. that the rocks have melted and recrystallized to form the rock. E. that the heat and pressure involved partly influences which minerals will form in the metamorphic rock.
Based on shoreline deposits from 125,000 years ago, scientists believe that the sea will ________ before the next ice age
A) rise 5-6 meters B) rise 10-12 meters C) drop 1-2 meters D) drop 10-12 meters
The unconsolidated parent material beyond the reach of most roots is ________
A) the A horizon B) loam C) the C horizon D) solum E) the F horizon
Which of the following would not be a part of new urbanism?
A) encouraging compact developments embedded in natural landscapes B) razing buildings and neighborhoods that are "old" C) encouraging community neighborhoods D) promoting mix land uses E) creating walk able neighborhoods