Which could be a form of bias in a map? Check all that apply.
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A. When cities are shown in green and countryside shown in yellow
B. When south is depicted as being toward the top of the map
C. When road is labeled according to federal designation instead of
by local names
✓ D. When average incomes are given as a single number for an entire
county

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks