Question

Which of the following is a characteristic of inner planets? (2 points)

A. Hydrogen and helium atmosphere
B. Many moons
C. No land-atmosphere interface
D. Rocky surface

Answer 1

Earth, Venus, Mercury and Mars are the four inner planets. Scientist call them the 'terrestial planets' because they have solid, rocky surfaces, roughly similar to desert and mountainous areas on Earth.

Answer 2

"Inner" planets are usually considered to be Mercury, Venus,
Earth, and Mars.

A). No. None of these planets has any substantial amount of hydrogen
or helium in its atmosphere.

B). No. Mercury and Venus have no moons at all, and Earth and Mars
have only three moons total between them.

C). No. Not sure what this means, but the "ground" seems like a pretty fair
land-atmosphere interface, and Venus, Earth, and Mars have a lot of that.

D). Yes. All four of them have it.