The answer on this scenario is all of these. Modelling one's work after the other is acceptable yet to replace one's experience with the experience of the writer is not. Also copying directly and failing to use one's own theme are all not acceptable.
The relationship between a main sequence star's b-v color value and luminosity is a direct relationship.
The Hipparcos satellite measures the distances between hundreds of thousands of stars. It measures the magnitude of each stars through two filters which are, a blue filter, yielding for B magnitude (for blue) and a greenish filter, yielding a V magnitude (for visual).
The difference between the B and V magnitude of star is (B-V) color , or sometimes just "color" in short. The wavelength of light where the star is related to the star's temperature, i.e., the hotter the star the more blue it is and the cooler the star the more red it is.
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The fourth one. But change the definition to “A tax on annual income”
They were different because an oligarchy is only a few people that have power and tyranny is a leader so it is one person that has power. In the democracy created<span> by the </span>cleisthenes<span> all the Athens could participate in he assembly. Pericles changed Athenian </span>democracy<span> by encouraging them to take pride in there city.</span>
