Which of the following is NOT true? A. The upper part of the leg is the thigh bone.
B. Bones can many times repair themselves.
C. Bones are not living.
D. Disks cushion the vertebrae

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.

Facilitates growth and change in neurons and the migration of neurons to different sites in the brain

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?