The sequence of stellar spectral types is shown in the figure below.Explain why the hottest star (O5) has so little emission in the visible portion of the spectrum (450-700 nm), spectral types F-K show the most emission in the visible band, and still cooler stars (M type) once again show very little in the visible band. 
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Negotiations
The process of discussing and coming to an agreement between parties with differing interests.
Benefits
Advantages or gains, often associated with employment or business dealings, that improve the condition or situation of an individual or entity.
Nonfinancial Forms
Types of benefits or compensation that are not in the form of money, such as healthcare, retirement plans, or company-provided housing.
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