question 2 of 20\nwhich gas did volcanoes not produce in the precambrian era?\na. water vapor\nb. carbon…

question 2 of 20\nwhich gas did volcanoes not produce in the precambrian era?\na. water vapor\nb. carbon dioxde\nc. sulfur\nd. oxygen

question 2 of 20\nwhich gas did volcanoes not produce in the precambrian era?\na. water vapor\nb. carbon dioxde\nc. sulfur\nd. oxygen

Answer

Brief Explanations:

During the Precambrian era, volcanic activity released various gases like water vapor, carbon - dioxide, and sulfur compounds. However, the atmosphere at that time had very little free oxygen as photosynthetic organisms that produce oxygen through photosynthesis were not widespread yet. Volcanoes did not produce oxygen in significant amounts during the Precambrian.

Answer:

D. Oxygen