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On Earth hydrogen and helium are gases, so the two biggest planets are sometimes called:
ADwarf planets
BGas planets
CIce planets
DRock planets
Answer & Solution
Correct answer: B. Gas planets
1. Their bulk is hydrogen and helium.
2. The nickname follows from the state on Earth.
3. They are called gas planets.
_Source: OpenStax Astronomy 2e, Chapter 7, Other Worlds: an Introduction to the Solar System._
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