Question

earths second atmosphere (atmosphere ii) was produced primarily by which process?
condensation
photodissociation
biological activity
outgassing

Explanation:

To determine the process that produced Earth's second atmosphere (atmosphere II), we analyze each option:

• Condensation: Involves gas - to - liquid phase change, not atmospheric production.
• Photodissociation: Breaks molecules with light, not the main source of the second atmosphere.
• Biological activity: Life forms came later, so not for early second atmosphere.
• Outgassing: Volcanic and geothermal processes release gases (like water vapor, CO₂, N₂) from Earth's interior, which is the primary process for forming the second atmosphere.

Answer:

outgassing (the option corresponding to "outgassing")