Larger rocks are broken into smaller pieces through ______ and carry away by their original location by ______?
WEATHERING, EROSION
One trait that protects people from Malaria is Sickle Cell Anemia. The infected cells collapse when plasmodium tries to feed off them and prevents them from getting actin proteins. It guards the host from Malaria.
Another trait is people that are negative for the Duffy blood group have resistance to infections caused by p. vivax (plasmodium vivax).
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Answer:
B) acetylcholine
Explanation:
Acetylcholine is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle.
When the concentrations of estrogen and progesterone are low
A population of squirrels is preyed on by small hawks at maturity. the smaller adult squirrels can escape into burrows. the larger adult squirrels can fight off the hawks. after several generations, the squirrels in the area tend to be very small or very large. this is an example of disruptive selection. In disruptive selection, the extreme traits i.e., very small and very large sizes are favoured over intermediate trait i.e., average size.