The defining characteristic of potable water is that it .
a.
is used as tap water
b.
can be used for washing and irrigation
c.
can be used and consumed without risk
d.
is delivered through pipes

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

hope this !

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.