How did life begin on Earth? Based on studies of fossilized bacteria, scientists theorize that life first emerged on Earth over 4 billion years ago as simple, single-celled organisms. Over time, these ...
How did life begin on Earth? While scientists have theories, they don't yet fully understand the precise chemical steps that led to biology, or when the first primitive life forms appeared. But what ...
How did life begin on Earth? While scientists have theories, they don’t yet fully understand the precise chemical steps that led to biology, or when the first primitive life forms appeared. But what ...
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