Uranus and Neptune Contain Smaller Percentages of Hydrogen and Helium

question 34

Multiple Choice

Uranus and Neptune contain smaller percentages of hydrogen and helium than Jupiter and Saturn probably because Uranus and Neptune ________ than Jupiter and Saturn.

• A) are much smaller in radius
• B) are much warmer
• C) are much colder
• D) formed later
• E) formed earlier

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