Answer:
The answer is A. less competition for resources
Explanation:
Cyanobacteria helped produce O2. Because it helped releasing O2 into the atmosphere, today we see different animals because Cyanobacteria helped reduce the poor oxygen in the atmosphere.
Semiconservative replication<span> would produce two copies that each contained one of the original strands and one new strand. Conservative </span>replication<span> would leave the two original template </span>DNA<span> strands together in a double helix and would produce a copy composed of two new strands containing all of the new </span>DNA<span> base pairs.</span>
