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sesenic [268]
3 years ago
9

Stromatolite fossils that formed 3.5 billion years ago indicate that _____.

Biology
1 answer:
hram777 [196]3 years ago
7 0
Stromatolite fossils are the oldest known fossils<span>, that formed 3.5 billion years ago when the environments of Earth were too hostile to support life as we know it today. They </span><span>are layered mounds, columns, and sheet-like sedimentary rocks</span><span>
Stromatolite fossils  indicate that  </span>life must have arisen quite a bit earlier, perhaps 3.9 billion years ago.
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