Scientists use the light year because nothing can travel fast than light. Therefore, in any given time frame, light will travel farther than any other substance or particle in the universe. For more precise measurements, scientists use astronomical units. One AU is equal to the distance between the earth and the sun. For anything less, scientists usually use kilometers. For extremely large, interstellar distances, light years are very useful. You wouldn’t want to measure the distance between Earth and Proxima Centauri in kilometers or even AU. The lightyear gives a simple, relative measurement.
The structures that would likely be examples of divergent evolution are the homologous structures. These are structures which share a similar structure and appear in different organisms and yet may vary in function. For example; Mammalian forelimbs are said to be homologous because they are all derived from a vertebrate forelimb.
The answer is A. Hopefully this will help you
As in printing a book, if there is a slight defect in the mutation, it will be copied to every other mutation, just like a grammatical error in a book.
Homologies. These determine if there are any similarities. Such as the wings on a butterfly to a bird.
