Examlex
Name the spectral class of a star whose spectrum shows the following absorption lines: very strong Ca II lines; weak Fe I and Ca I lines; no He I,He II,or TiO lines.(Hint: Use the absorption line strengths shown in Figure 10-5 and Table 10-1 of Comins,Discovering the Essential Universe,6th ed.)
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Unemployment caused by seasonal changes in the demand for certain kinds of labor.
Official Unemployment Rate
The percentage of the labor force that is jobless and actively seeking employment, as calculated by government statistics.
Christmas Season
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