I think it’s a, hopefully you get it right!
Answer:
B) Natural selection favored rabbits that were resistant to the virus
Explanation:
Most likely, virus resistance occurred over time, as a consequence of mutation. Individuals that carried the resistance mutation become favourable by natural selection.
Natural selection is evolutionary mechanism which favours traits of an organism that help him survive and reproduce (increase organism's fitness). In the example above, resistant rabbits that survived had the favorable trait (resistance) by natural selection.
The asthenosphere is denser than the lithosphere.
Red blood cells, I need a little bit more details to fulky know, please respond to me thanks
RNA, is ribonucleic<span> acid
DNA, is </span><span>deoxyribonucleic acid</span>