Select the correct answer.
What is the perihelion?
A.
It is the point of a planet's orbit that is furthest away from the star it orbits.
B.
It is the distance between the closest natural satellite and the planet it orbits.
C.
It is the distance between an asteroid and the star it orbits.
D.
It is the point of an orbit at which a planet is closest to the star it orbits.

he made 11 calls in one day

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.