Which living species share a close evolutionary connection to either humans or whales?

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.

Due tonight 10 points will mark brain

The wind speed in the region between cities a and b was probably the greatest at noon on which day?