13 of 1513 of 15 Items
Question
What evidence is there that oxygen levels in the sea increased due to photosynthetic bacteria?(1 point)
Responses
decreases in anaerobic organisms
decreases in anaerobic organisms
rust deposits in the ancient ocean
rust deposits in the ancient ocean
global cooling
global cooling
rust deposits in today’s ocean
1 answer
The correct response is:
rust deposits in the ancient ocean
This indicates that oxygen produced by photosynthetic bacteria reacted with iron in the ocean, leading to the formation of rust (iron oxides), which serves as evidence of increased oxygen levels.
