A star with a surface temperature of 3,000 K is A
brighter in the green wavelengths and dimmer in the blue and red wavelengths.
dimmer in the blue wavelengths and brighter in the red wavelengths.
the same brightness at all visable
brighter in the blue wavelengths and dimmer in the red wavelengths

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answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

490 n

f=125n a=2.5m/s2