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Correct Answer: A) Orbit.
Correct Answer: B) Rocks and metals.
Correct Answer: D) Nebulas.
Correct Answer: C) Moons.
Correct Answer: C) Mars.
Correct Answer: B) Its revolution around the sun.
Correct Answer: B) The Asteroid Belt.
Correct Answer: A) Jupiter.
Correct Answer: A) Ice.
Correct Answer: A) Protostar.
Correct Answer: A) The distance of really far objects in space.
Correct Answer: C) It has liquid water that allows plants and animals to live.
Correct Answer: B) Mercury and Venus.
Correct Answer: C) The sun.
Correct Answer: A) Earth orbits the Sun.
Correct Answer: C) The planets display retrograde movement in the sky.
Correct Answer: A) Inner planets.
Correct Answer: C) Galileo.
Correct Answer: B) On Venus, a day is longer than a year.
Correct Answer: B) Pluto.
Correct Answer: A) Earth.
Correct Answer: C) Astronomical Units (AU).
Correct Answer: D) Jupiter, Saturn, Uranus, Neptune.
Correct Answer: D) Saturn, Uranus, Neptune.
Correct Answer: B) Jupiter.