Answer:
natural selection operates primarily on characteristics that are tied to reproductive fitness.
Explanation:
Based on the information provided within the question it can be said that this is due to the fact that natural selection operates primarily on characteristics that are tied to reproductive fitness. In other words natural selection keeps those traits that allow the species to live long enough in order to reproduce but does not weed out many harmful conditions and non-adaptive characteristics if the species reaches reproductive age.
The Rocky mountains would do so.
Animals can offer people welcome friendship
The correct answer among the choices listed above is option D. A political unit or body of people living within a specific territory under one federal government is defined as a state. It is composed of an executive, a bureaucracy, courts and other institutions.