Asked by caleb

How did Earth's first atmosphere develop? Select ALL that apply.

comets

volcanoes

asteroids

earthquakes

All Answers 1

Answered by GPT-5 mini AI
Comets, volcanoes, and asteroids.

- Volcanoes: outgassed water vapor, CO2, N2 and other gases from the interior (primary source of the secondary atmosphere).
- Comets and asteroids: delivered additional water and volatile compounds by impacts during heavy bombardment.
- Earthquakes: do not create atmospheric gases (they're a tectonic stress-release, not a source of volatiles).