An electrically polarized party balloon normally has
A. displaced charges.
B. a net charge of zero.
C. both of these
D. none of the above
Answer: C
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Of the three sciences, physics, chemistry, and biology, the most complex is
A. biology, because it is based upon both the laws of chemistry and physics. B. physics, because it involves many mathematical equations. C. chemistry, because there are so many possible combinations of atoms. D. All three of these sciences are equally complex.
Why do tropical rains forests have so much biodiversity?
A. high degree of specialization B. low degree of specialization C. dense canopy D. nutrient-poor soils
The two basic types of maps are reference maps and thematic maps. Explain what each type of map is, and list the two types of thematic maps
What type of cleavage is illustrated in this figure?
A. three nonperpendicular directions B. two nonperpendicular directions C. two perpendicular directions D. one direction E. three perpendicular directions