Answer:
here.
Explanation:
Due to the prevalence of malaria in Africa, the allele for sickle cell anemia (HbS) provides a selective advantage. That's why it remains in the population.
A normal African person (HbAHbA), with normal haemoglobin, will not die of anemia, but will die of malaria.
An African person with sickle cell anemia (HbSHbS), with abnormal haemoglobin, will die of anemia.
A heterozygous African person (HbAHbS), with half of his red blood cells (RBCs) being normal and the other half being sickle-shaped, will neither die from anemia, nor malaria since the plasmodium will be incapable of completing its life cycle in the abnormal RBCs.
Thus heterozygous African people will grow, reproduce and pass on the HbS allele to the next generations.
Well, Angiosperms are grouped up with with the dicots and monocots.
Answer:
Ocean currents result from two processes - the action of wind on the surface of the water, and from variation in water temperature that causes movement- a process known as convection.Mantle convection is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. ... This subducted material sinks through the Earth's interior.
Explanation:
The mouth has the purpose of tasting food to maintain nutrition and to drink water to stay hydrated.
So B: Taste food.
Would be correct.
As the mouth does not help move around, see anything, or hear. Those are the jobs of the other 4 sense.
I hope this helps!
Brainliest is always appreciated if you feel its deserved!
Mercury is classified as a neurotoxin.
Neurotoxin are extensive class of exogenous chemical neurological insults that can adversely affect function on both developing and mature nervous tissue.in other words neurotoxins are toxins that are poisonous or destructive to nerve tissue. the nerve impulse is blocked and symptom include low heart rate and muscle paralyses
