Question
What does the presence of rust develops an ancient ocean show? Pick one answer
Oxygen from the earths atmosphere dissolved into the oceans
Anaerobic organisms decreased
Oxygen levels in the sea increased due to photosynthetic bacteria
Oxygen from space traveled into the earth of atmosphere
Oxygen from the earths atmosphere dissolved into the oceans
Anaerobic organisms decreased
Oxygen levels in the sea increased due to photosynthetic bacteria
Oxygen from space traveled into the earth of atmosphere
Answers
GPT-4o mini
The presence of rust developing in an ancient ocean shows that **oxygen levels in the sea increased due to photosynthetic bacteria**. Rust, primarily iron oxide, forms in the presence of oxygen, indicating that there was enough dissolved oxygen in the water, which is typically linked to the activity of photosynthetic organisms.