Some of the earliest fossils indicate that living creatures over 3 billion years ago may already have been

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The earliest fossils, dating back over 3 billion years, indicate that some of the first forms of life were capable of photosynthesis. This process, used by plants and some bacteria, converts light energy into chemical energy, suggesting that even the earliest life forms could harness energy from their environment.

Some of the Earliest Fossils Indicate That Living Creatures Over