Question How did the secondary atmosphere of Earth first develop?(1 point) Responses Hydrogen was captured from space during the formation of the solar system. Hydrogen was captured from space during the formation of the solar system. Photosynthetic organisms began replacing CO2 in the atmosphere with O2 . Photosynthetic organisms began replacing CO 2 in the atmosphere with O 2 . Volcanoes emitted gases onto the surface of Earth. Volcanoes emitted gases onto the surface of Earth. Oxygen reacted with iron in rocks to form iron oxide.
1 answer
The secondary atmosphere of Earth first developed as a result of volcanic activity. Volcanoes emitted gases such as water vapor, carbon dioxide, sulfur dioxide, and nitrogen, which contributed to the formation of the early atmosphere. Therefore, the correct response is:
Volcanoes emitted gases onto the surface of Earth.
