These are physical features shared by organisms with common ancestry; they may have the same structure. true or false

True

Explanation:

If they do not share a common ancestor then they wouldn't have and resemblance. But if they do share a common ancestor then there has to be some sort of structural similarities in bot organisms that you're looking at.

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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