What is early life forms

Explanation:

The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. ... Evidence of microbes was also preserved in the hard structures (“stromatolites”) they made, which date to 3.5 billion years ago.

the correct answer is 2 and 4

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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