How did the inner planets,Venus and Earth,acquire their original atmospheres?
A) Capture of solar-wind gases from the Sun as they streamed past the planets
B) The impact and melting of icy comets and asteroids from the planetary system and perhaps beyond
C) Gravitational capture of material from the original solar nebula by the planets
D) Outgassing of the planets through volcanoes and other vents

Question

Quizplus · Accepted Answer

Venus and Earth acquired their original atmospheres through outgassing of the planets through volcanoes and other vents. As the planets were formed and heated up, the volatile gases trapped in their interiors were released through volcanic activity, forming the initial atmosphere.

How Did the Inner Planets,Venus and Earth,acquire Their Original Atmospheres