How did the oceans of early Earth differ from the oceans of modern Earth?

The oceans of early Earth were significantly different from modern oceans in terms of composition and conditions. They were likely more acidic and rich in dissolved metals, with higher concentrations of gases like carbon dioxide and lesser amounts of oxygen. Additionally, early oceans were influenced by volcanic activity and lacked the diverse ecosystems found today, as life was just beginning to emerge. Over time, biological processes and geological changes led to the development of the more stable and diverse oceans we see now.