An unusual type of fossil clam is found in rock layers high in the Swiss Alps. The same type of fossil clam is also found in the Rocky Mountains of North America. From this, scientists Conclude that glaciers carried the fosils up the mountains. Othe Rocky Mountains and the Swiss Aips are both volcanic in origin clams once lived in mountains, but have since evolved into sea-dwelling creature. O1 the layers of rocks in which the fossis were found are from the same geologic age

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Wich level of organization includes all the other levels or organizations

The direct energy source that drives atp synthesis during respiratory oxidative phosphorylation is