What evidence is there that oxygen levels in the sea increased due to photosynthetic bacteria?(1 point) Responses rust deposits in the ancient ocean rust deposits in the ancient ocean decreases in anaerobic organisms decreases in anaerobic organisms rust deposits in today’s ocean rust deposits in today’s ocean global cooling choose the best one
The best answer is "decreases in anaerobic organisms". When photosynthetic bacteria evolved and began producing oxygen through photosynthesis, the increased oxygen levels in the ocean led to a decline in anaerobic organisms that are unable to survive in an oxygen-rich environment.
