Circle or highlight the six most common elements found in living things. do the same thing for the five other elements that are also found in the body in smaller quantities.

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.

The shift of a vehicle's weight around its center of gravity is known as

Which layer will become saturated first when rain falls?