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tatuchka [14]
2 years ago
14

For life to flourish on Earth, several changes occurred that affected the atmosphere, such as _____.

Physics
1 answer:
e-lub [12.9K]2 years ago
8 0
Evolution of cyanobacteria that produce O2volcanic outgassing to create a thicker atmosphereformation of an ozone layer to block harmful radiationall of the above<span>only a and c

Are the options</span>
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