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AURORKA [14]
3 years ago
12

Cyanobacteria were the first photosynthetic organisms. How were they responsible for allowing higher life forms to evolve? A. Th

ey released oxygen, which mixed to form iron, and later ferrous oxide, in the air. B. They released carbon dioxide, which evolving animals needed. Or C. They released oxygen, which created the ozone layer, resulting in reduced mutation rate.
Biology
2 answers:
bezimeni [28]3 years ago
8 0
<span> They released oxygen, which created the ozone layer, resulting in reduced mutation rate.

</span>
Andrews [41]3 years ago
6 0
B THEY RELEASED CARBON DIOXIDE, WHICH  EVOLVING ANIMALS NEEDED.
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  • The probability of obtaining a dominant phenotype from self-fertilization of a heterozygous individual is  3/4.

To know more about genotype   visit : brainly.com/question/12116830

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