Based on current knowledge about the conditions of the early Earth, the first organisms were most likely:

Question

Quizplus · Accepted Answer

The early Earth had little to no oxygen in its atmosphere, so the first organisms must have been able to survive without oxygen. Anaerobic prokaryotes, such as bacteria and archaea, can survive in oxygen-free environments and are therefore the most likely candidates for the first living organisms. Photosynthetic prokaryotes likely evolved later as a way to produce energy using sunlight. Eukaryotes, both photosynthetic and anaerobic, are more complex organisms that likely evolved much later than the first prokaryotic cells. Multicellularity also evolved relatively late in the history of life on Earth.

Based on Current Knowledge About the Conditions of the Early