select all of the answers that apply. which of the following factors caused the early atmosphere to become…

select all of the answers that apply. which of the following factors caused the early atmosphere to become thicker? \n□ volcanic outgassing\n□ banded iron formations\n□ meteorite and comet impacts\n□ cyanobacteria

select all of the answers that apply. which of the following factors caused the early atmosphere to become thicker? \n□ volcanic outgassing\n□ banded iron formations\n□ meteorite and comet impacts\n□ cyanobacteria

Answer

Brief Explanations:

Volcanic outgassing released gases adding to atmosphere. Meteorite - comet impacts brought in materials. Banded iron formations and cyanobacteria didn't thicken it in this way.

Answer:

volcanic outgassing, meteorite and comet impacts