Which statement about malaria and sickle-cell anemia is correct? (1 point) Malaria causes a decreased incidence of sickle-cell anemia,
Sickle-cell anemia causes an increased incidence of malaria.
Sickle-cell anemia is correlated with an increased incidence of malana
Malaria is correlated with a decreased incidence of sickle cell anemia

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.