Please help:))) i can’t find the right question or answer anywhere

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.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

What terms describes being out of water after being submerged