Answer
HBA HBs
Explanation:
In some parts of Africa, up to 20% of the population are carriers of the sickle cell gene. This suggests that the trait must have a survival value. The carriers of the trait have a much lower susceptibility to malaria than normal individuals. This is because the malaria parasite survives very poorly in sickled red blood cells.
Answer:
the kidneys are the most important function of the urinary system
Explanation:
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<3 anmol
Cholesterol is a waxy substance found in blood.
