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The four giant gas planets that are made primarily of lightweight elements are

A. Mercury, Venus, Earth, and Neptune.
B. Earth, Saturn, Neptune, and Venus.
C. Venus, Saturn, Uranus, and Neptune.
D. Jupiter, Saturn, Uranus, and Neptune.

1 Answer

2 votes
D) although recent research (1990's) has shown Uranus and Neptune to be ice giants and have heavier substances.
User Giovanni Bruno
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