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Correct Answer: D) Meteorites.
Correct Answer: D) 1.
Correct Answer: A) Earth.
Correct Answer: B) Mars.
Correct Answer: D) Making careful observations and using logical reasoning.
Correct Answer: B) The sun.
Correct Answer: C) Saturn.
Correct Answer: D) Asteroids.
Correct Answer: B) 365 days.
Correct Answer: D) Earth.
Correct Answer: D) How long it takes a planet to revolve around the Sun once.
Correct Answer: C) Neptune.
Correct Answer: B) Large, planetary rings; many moons.