As they formed, due to their high temperatures and comparatively weak gravitational fields, which planets were unable to retain appreciable amounts of hydrogen, helium, and ammonia?
A)Neptune and Uranus
B)Jupiter and Neptune
C)Jupiter and Uranus
D)Uranus and Pluto
E)Mercury and Earth

Question

Quizplus · Accepted Answer

Mercury and Earth, being closer to the Sun and smaller in size compared to the gas giants, had high temperatures and weaker gravitational fields. This made it difficult for them to retain light gases such as hydrogen, helium, and ammonia in their atmospheres.

As They Formed, Due to Their High Temperatures and Comparatively