Photosynthetic bacteria evolved on earth abou | vedclass

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(B) The correct answer is $B$. Photosynthetic bacteria,such as cyanobacteria,are believed to have evolved during the Archeozoic era. Geological eviden

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$3000$ to $3300$

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(B) The correct answer is $B$. Photosynthetic bacteria,such as cyanobacteria,are believed to have evolved during the Archeozoic era. Geological evidence and fossil records indicate that these organisms were present on Earth approximately $3000$ to $3300$ million years ago. These early photosynthetic organisms played a crucial role in oxygenating the Earth's atmosphere.

Photosynthetic bacteria evolved on earth about ....... million years ago.

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