Ascientist who solves a new problem using something already learned is being what?

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.

Suppose you were the commissioner of corrections for your state. which correctional activities might come within your domain? which mostly would not

According to these anatomical structures which two animals are probably most closely related