the second one, any change in a DNA gene or chromosome
The right answer is A. <span>Each oxygen shares two electrons with each other.
(I took the quiz)</span>
This is because the animals with the favorable traits would survive. Therefore they will be the only ones left because they were able to adapt to the environment. And when they breed, the offspring will gain those favorable and the less favorable traits will continue to not be used which is why they “fade away” overtime.
