I think the correct answers from the choices listed above are options B and C. The two main sources that lead to increased genetic variation would be Gamete mutations and recombination. <span>Gametes mutations leads to change in DNA information, recombination allows mixture of genotypes.</span>
We find the oldest rock on Earth at the center of continents, called cratons. These have been recycled multiple times.
<h3>What is the name of oldest rock found on Earth ? </h3>
The oldest rock is found in Canada and the name of the rock is bedrock.
The oldest rocks are usually found in the center of continents called as cratons. The reason for it is because it is stable part of lithosphere that has survived multiple of explosions and environmental conditions where as in the production of super continents these cratons have survived the conditions.
Learn more about cratons at :
brainly.com/question/15694782
#SPJ1
