Recent research reveals that the earliest oceans were green, challenging the long-held belief that they were blue. This fascinating study highlights the role of cyanobacteria, which emerged around 4 billion years ago. These primitive organisms, commonly referred to as algae, were pioneers in oxygenic photosynthesis.
The findings suggest that the color of the oceans was influenced by the abundance of these microorganisms. Cyanobacteria played a crucial role in shaping the planet’s atmosphere and ecosystems. As they thrived in ancient seas, they produced oxygen, leading to significant changes in environmental conditions.
Impact on Earth’s Evolution
This research not only alters our understanding of oceanic history but also emphasizes the importance of cyanobacteria in the evolution of life on Earth. As we uncover more about our planet’s past, we gain insights into how life developed and adapted over billions of years.
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